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 [Maxima-discuss] Lapack and ECL From: Gunter Königsmann - 2017-08-11 05:00:13 ```Dear all, My last try to compile Lapack with an ECL-based maxima has succeeded => Either us or the ECL team seems to have resolved the problem that has hindered lapack from compiling: (%i2) build_info(); (%o2) Maxima version: "branch_5_40_base_189_g3b28652ca" Maxima build date: "2017-08-09 22:20:37" Host type: "x86_64-pc-linux-gnu" Lisp implementation type: "ECL" Lisp implementation version: "16.1.2" (%i3) Kind regards, Gunter. ```
 Re: [Maxima-discuss] Solve nonlinear differential equation From: Helmut Jarausch - 2017-08-10 18:01:38 ```On 08/09/2017 03:21:35 PM, Jaime Villate wrote: > On 08-08-2017 20:36, Martin Marmsoler wrote: >> Hello, >> >> I would like to solve the following nonlinear differential equations, >> but I didn't find something to do this action: >> >> omega_punkt(t):= 'diff(alpha(t),t,2); >> >> 10=0.6936717523440032*cos((%pi*(360*alpha(t)+45))/180)+0.01*('diff(alpha(t),t,2)) >> >> I would like to get an expression or plot for alpha(t) over t (t=0 >> ... >> t=2e-3). >> >> Do somebody know how to solve this differential equation? > > Hi, > as far as I know, there are no analytical methods to solve that kind > of > equation; you must solve it numerically. Please read sections 22.4 and > 22.5 of the manual > (http://maxima.sourceforge.net/docs/manual/maxima_22.html#SEC113) > > To obtain a numerical solution with Maxima, you need initial values > for > alpha and diff(alpha,t) at t=0. for example, assuming initial values > of > zero for both, the solution would be: > > (%i1) eq1: 'diff(alpha,t) = omega; > > dalpha > > (%o1) ------ = omega > > dt > > (%i2) eq2: 'diff(omega,t) = (10 - > 0.6936717523440032*cos((%pi*(360*alpha+45))/180))/0.01; > > domega > > (%o2) ------ = 100.0 (10 - 0.6936717523440032 > > dt > > %pi (360 alpha + 45) > > cos(--------------------)) > > 180 > > (%i3) sol: > rk([rhs(eq1),rhs(eq2)],[alpha,omega],[0,0],[t,0,2e-3,1e-5])\$ > > (%i4) last(sol); > > (%o4) [0.002, 0.001902095856394194, 1.902292185905305] > > (%i5) sol: > rk([rhs(eq1),rhs(eq2)],[alpha,omega],[0,0],[t,0,2e-3,1e-6])\$ > > (%i6) last(sol); > > (%o6) [0.002, 0.001902095856394194, 1.902292185905307] > > (%i7) plot2d([discrete, makelist([p[1], p[2]], p, sol)])\$ > > > The rk command was run twice, reducing the t step, to make sure the > result converges. > Hi, I'd just like to mention that it would be better to use a numerical integrator with error control, e.g. Eulix in the contrib directory, which - in addition - is more robust in case the solution gets stiff, which cannot easily be predicted for a nonlinear ODE. Helmut ```
 Re: [Maxima-discuss] Solve nonlinear differential equation From: Jaime Villate - 2017-08-09 13:21:45 ```On 08-08-2017 20:36, Martin Marmsoler wrote: > Hello, > > I would like to solve the following nonlinear differential equations, > but I didn't find something to do this action: > > omega_punkt(t):= 'diff(alpha(t),t,2); > > 10=0.6936717523440032*cos((%pi*(360*alpha(t)+45))/180)+0.01*('diff(alpha(t),t,2)) > > I would like to get an expression or plot for alpha(t) over t (t=0 ... > t=2e-3). > > Do somebody know how to solve this differential equation? Hi, as far as I know, there are no analytical methods to solve that kind of equation; you must solve it numerically. Please read sections 22.4 and 22.5 of the manual (http://maxima.sourceforge.net/docs/manual/maxima_22.html#SEC113) To obtain a numerical solution with Maxima, you need initial values for alpha and diff(alpha,t) at t=0. for example, assuming initial values of zero for both, the solution would be: (%i1) eq1: 'diff(alpha,t) = omega; dalpha (%o1) ------ = omega dt (%i2) eq2: 'diff(omega,t) = (10 - 0.6936717523440032*cos((%pi*(360*alpha+45))/180))/0.01; domega (%o2) ------ = 100.0 (10 - 0.6936717523440032 dt %pi (360 alpha + 45) cos(--------------------)) 180 (%i3) sol: rk([rhs(eq1),rhs(eq2)],[alpha,omega],[0,0],[t,0,2e-3,1e-5])\$ (%i4) last(sol); (%o4) [0.002, 0.001902095856394194, 1.902292185905305] (%i5) sol: rk([rhs(eq1),rhs(eq2)],[alpha,omega],[0,0],[t,0,2e-3,1e-6])\$ (%i6) last(sol); (%o6) [0.002, 0.001902095856394194, 1.902292185905307] (%i7) plot2d([discrete, makelist([p[1], p[2]], p, sol)])\$ The rk command was run twice, reducing the t step, to make sure the result converges. Best regards, Jaime ```
 [Maxima-discuss] Solve nonlinear differential equation From: Martin Marmsoler - 2017-08-08 19:36:24 Attachments: Message as HTML ```Hello, I would like to solve the following nonlinear differential equations, but I didn't find something to do this action: omega_punkt(t):= 'diff(alpha(t),t,2); 10=0.6936717523440032*cos((%pi*(360*alpha(t)+45))/180)+0.01*('diff(alpha(t),t,2)) I would like to get an expression or plot for alpha(t) over t (t=0 ... t=2e-3). Do somebody know how to solve this differential equation? Best regards, Martin ```
 Re: [Maxima-discuss] matrix and calling convention From: Soegtrop, Michael - 2017-08-08 10:00:39 Attachments: Message as HTML ```Dear Stavros, ​Besides hash-arrays, Maxima also supports ​regular n-dimensional linear arrays. Looks like I lost sight of the forest cause of the many trees, as we say in Germany. I see to make my linear algebra algorithm implementations work with matrices, declared arrays and hashed arrays and add an option to convert on input everything to generic declared arrays or float declared arrays and on output back to matrix if the input was a matrix. One question: is there a better way than member(A, arrays) or arrayinfo(A) and catch the error for checking if A is an array – something like matrixp? Best regards, Michael Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, http://www.intel.de Managing Directors: Christin Eisenschmid, Christian Lamprechter Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928 ```
 Re: [Maxima-discuss] Elements of a list (such as diagonal matrix) From: Soegtrop, Michael - 2017-08-08 08:46:45 Attachments: Message as HTML ```Dear Alasdair, I think apply(diag_matrix, list) is what you are looking for. Best regards, Michael Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, http://www.intel.de Managing Directors: Christin Eisenschmid, Christian Lamprechter Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928 ```
 [Maxima-discuss] Elements of a list (such as diagonal matrix) From: Alasdair McAndrew - 2017-08-08 06:32:02 Attachments: Message as HTML ```I'm sure I've asked this before, but a long time ago, and I can't remember how it's done. I want to create a diagonal matrix of specified size, with random elements. Now I can create a random list, but the function "diag_matrix" doesn't accept a list as input, but individual elements. How do I "unlist" the values in my random list so that I can pass them to "diag_matrix"? Thank you very much, Alasdair ```
 Re: [Maxima-discuss] Looking for Mac-based computer running Windows to maximize speed in running Maxima From: Gould, Laurence - 2017-08-07 22:33:37 ```Thank You. Also for your suggestion: " leave off the "html" ". That works. ---- Larry -----Original Message----- From: Richard Fateman [mailto:fateman@...] Sent: Sunday, August 06, 2017 10:15 AM To: Gould, Laurence; Subject: Re: Looking for Mac-based computer running Windows to maximize speed in running Maxima On 8/6/2017 12:04 AM, Gould, Laurence wrote: > Thanks very much for letting me know about the options. They will > enable me to compare the benefit/cost of the two types of machines. > > If possible, I would be interested in your recommendation of any > book(s) or link(s) on Maxima which are good at explaining programming? > > Do you have a copy of your published paper? > https://people.eecs.berkeley.edu/~fateman/papers/hermite.pdf > ; > The Taylor series is one of the parts that caught my interest. This paper appears only on my web site (or if someone has copied it elsewhere). It is something of a hodge-podge of results, and some of the problems it solves seem to have been solved in other ways by different systems (in order to get very precise values of Bessel functions near zeros). > > Also, from your website, when calling up the link > https://people.eecs.berkeley.edu/~fateman/msw.html > ; leave off the "html" to get this. that is, https://people.eecs.berkeley.edu/~fateman/msw Math Speak and Write worked on Windows XP / tablet. The project seemed to attract zero interest from the math community. The idea (of speaking mathematical formulas into a computer, in conjunction with writing on a tablet) was programmed well before Siri and Alexa, and when tablets were uncommon. Reviving msw would probably require reconsidering the underlying support systems which have changed since 2004. Maybe it would get some traction today. For those of us who are fast and accurate typists, and usually use computers with keyboards, it is not so interesting to use. MSW was not perfectly accurate or easy to use (accuracy improved by training per user); the fact that no one other than my students ever tried to use it was sad. I demonstrated it (very successfully) at a math conference in Minnesota; no interest then. RJF\ > I get the message "Resource not found" > > ```
 Re: [Maxima-discuss] matrix and calling convention From: Gunter Königsmann - 2017-08-07 19:27:21 Attachments: Message as HTML ```Also while accessing the nth element of a lisp iterating through a list using makelist or for is fast as is appending to a list, applying a function on it or reversing it. Am 7. August 2017 20:39:51 MESZ schrieb "Stavros Macrakis (Σταῦρος Μακράκης)" : >On Mon, Aug 7, 2017 at 3:34 AM, Soegtrop, Michael < >michael.soegtrop@...> wrote: > >> ​... >> >> I wanted to test where the breakeven point between matrices and >arrays is. >> Hashing is O(1) but I guess the constant is quite a bit larger than >for a >> list walk. >> > >​Besides hash-arrays, Maxima also supports ​regular n-dimensional >linear >arrays. See the 'array' function. Those should be very fast in compiled >code where everything is properly declared with modedeclare. -- Diese Nachricht wurde von meinem Android-Gerät mit K-9 Mail gesendet.```
 Re: [Maxima-discuss] matrix and calling convention From: Stavros Macrakis (Σταῦρος Μακράκης) - 2017-08-07 18:39:59 Attachments: Message as HTML ```On Mon, Aug 7, 2017 at 3:34 AM, Soegtrop, Michael < michael.soegtrop@...> wrote: > ​... > > I wanted to test where the breakeven point between matrices and arrays is. > Hashing is O(1) but I guess the constant is quite a bit larger than for a > list walk. > ​Besides hash-arrays, Maxima also supports ​regular n-dimensional linear arrays. See the 'array' function. Those should be very fast in compiled code where everything is properly declared with modedeclare. ```
 [Maxima-discuss] Quicklisp in Android From: Dimiter Prodanov - 2017-08-07 11:00:13 Attachments: Message as HTML ```Dear all, Is it possible to include quicklisp in the new android version? Now It is not easy to install packages in Maxima on android. Best regards, Dimiter ```
 Re: [Maxima-discuss] matrix and calling convention From: Soegtrop, Michael - 2017-08-07 07:34:13 Attachments: Message as HTML ```Dear Stavros, thanks for the explanation! I never came across the effect that lists can be modified inside of a function. I was assuming that except for arrays Maxima behaves like typical functional languages where lists are physically passed by reference but modified parts are copied while unmodified parts are shared with the caller, so that logically they are call by value. But thinking about it I see that assignment would be a bit difficult this way, although one anyway has to go through the list to access the indexed element and could copy the head part on the way. So I guess the args function and possibly other functions which convert from expressions to lists copy the argument list to avoid manipulating an expression with list assignments. Interesting. Regarding your comment on matrices and speed: yes this is obvious. I am writing my code such that it works with both. This way I also avoid the Maxima functions which are needlessly calling transpose to do an O(N) job. I wanted to test where the breakeven point between matrices and arrays is. Hashing is O(1) but I guess the constant is quite a bit larger than for a list walk. Best regards, Michael Intel Deutschland GmbH Registered Address: Am Campeon 10-12, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, http://www.intel.de Managing Directors: Christin Eisenschmid, Christian Lamprechter Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928 ```
 Re: [Maxima-discuss] Maxima on Android: declare(antisymmetric) bug? From: José A. Vallejo Rodríguez - 2017-08-07 07:22:38 Attachments: Message as HTML ```Dear Honda-san: Thank you very, very much for the time invested in MoA. May I add a little suggestion? In a Samsung A8 tablet, Android 6.0.1, MoA runs fine, but the font of the welcome message is extremely huge. Changing the font size in the menu alters the size of input, but the output remains certainly huge. While this is not a big problem (I show the output of MoA on a beamer in the classroom, actually) it would be good to be able of modifying this behavior. All the best! _____________________________________ José Antonio Vallejo Faculty of Sciences State University of San Luis Potosi (Mexico) http://galia.fc.uaslp.mx/~jvallejo _____________________________________ 2017-08-07 0:07 GMT-05:00 Viktor T. Toth : > Thank you very much, Honda-san, for your efforts. It is wonderful to be > able to run Maxima on Android devices. > > > Viktor > > > > -----Original Message----- > > From: 本田康晃 [mailto:yasuaki.honda@...] > > Sent: Sunday, August 6, 2017 11:51 AM > > To: Stanislav Maslovski > > Cc: maxima-discuss@... > > Subject: Re: [Maxima-discuss] Maxima on Android: declare(antisymmetric) > bug? > > > > Dear all in this thread, > > > > I am sorry to be very late in following up this thread. I appreciate > > all of the discussions appeared here. I am working on the next release > > of MoA 3.1, in which this declare(f, antisymmetric) issue will be > > addressed. A few things to note: > > - src and tests directories are entirely removed in the MoA releases > > due to the apk file size limit. > > - adding tests directory (using ADB) will enable you to run_testsuite(). > > - I am running all the tests with run_testsuite() now, as I did so > > back roughly two years when most of the tests were OK. > > - There seems more errors now than I expected, 15 out of 11185 test > > cases. I debugged most of them. Next release will address all of them. > > > > Thanks and best regards, > > Yasuaki Honda, Chiba, Japan > > > > 2017-07-14 2:58 GMT+09:00 Stanislav Maslovski < > stanislav.maslovski@...>: > > > Hi, > > > > > > On July 13, 2017 5:45:49 AM GMT+01:00, Robert Dodier < > robert.dodier@...> wrote: > > >>Can you run_testsuite(); (without loading foo.lisp)? Do you get any > > >>test failures? > > > > > > Unfortunately, in Maxima on Android the test suite seems to be > stripped off: > > > > > > (%i1) run_testsuite(); > > > > > > Maxima encountered a Lisp error: > > > > > > Filesystem error with pathname #P"/data/user/0/jp.yhonda/ > files/maxima-5.39.1/tests/testsuite.lisp". > > > Either > > > 1) the file does not exist, or > > > 2) we are not allowed to access the file, or > > > 3) the pathname points to a broken symbolic link. > > > > > > Automatically continuing. > > > To enable the Lisp debugger set *debugger-hook* to nil. > > > > > >>Maxima is not the most reliable program to begin with, and incorrect > > >>code just makes it worse ... > > > > > > Maybe Y. Honda will read this thread and find some workaround? Maybe > another compiler can be used on Android. In > > any case, I've added a bug report to his repo on github referring to the > discussion on this mailing list. > > > > > > > > > -- > > > Sent from my Android device with K-9 Mail. Please excuse my brevity. > > > > > > ------------------------------------------------------------ > ------------------ > > > Check out the vibrant tech community on one of the world's most > > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > _______________________________________________ > > > Maxima-discuss mailing list > > > Maxima-discuss@... > > > https://lists.sourceforge.net/lists/listinfo/maxima-discuss > > > > ------------------------------------------------------------ > ------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Maxima-discuss mailing list > > Maxima-discuss@... > > https://lists.sourceforge.net/lists/listinfo/maxima-discuss > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Maxima-discuss mailing list > Maxima-discuss@... > https://lists.sourceforge.net/lists/listinfo/maxima-discuss > ```
 Re: [Maxima-discuss] Maxima on Android: declare(antisymmetric) bug? From: Viktor T. Toth - 2017-08-07 05:07:53 ```Thank you very much, Honda-san, for your efforts. It is wonderful to be able to run Maxima on Android devices. Viktor > -----Original Message----- > From: 本田康晃 [mailto:yasuaki.honda@...] > Sent: Sunday, August 6, 2017 11:51 AM > To: Stanislav Maslovski > Cc: maxima-discuss@... > Subject: Re: [Maxima-discuss] Maxima on Android: declare(antisymmetric) bug? > > Dear all in this thread, > > I am sorry to be very late in following up this thread. I appreciate > all of the discussions appeared here. I am working on the next release > of MoA 3.1, in which this declare(f, antisymmetric) issue will be > addressed. A few things to note: > - src and tests directories are entirely removed in the MoA releases > due to the apk file size limit. > - adding tests directory (using ADB) will enable you to run_testsuite(). > - I am running all the tests with run_testsuite() now, as I did so > back roughly two years when most of the tests were OK. > - There seems more errors now than I expected, 15 out of 11185 test > cases. I debugged most of them. Next release will address all of them. > > Thanks and best regards, > Yasuaki Honda, Chiba, Japan > > 2017-07-14 2:58 GMT+09:00 Stanislav Maslovski : > > Hi, > > > > On July 13, 2017 5:45:49 AM GMT+01:00, Robert Dodier wrote: > >>Can you run_testsuite(); (without loading foo.lisp)? Do you get any > >>test failures? > > > > Unfortunately, in Maxima on Android the test suite seems to be stripped off: > > > > (%i1) run_testsuite(); > > > > Maxima encountered a Lisp error: > > > > Filesystem error with pathname #P"/data/user/0/jp.yhonda/files/maxima-5.39.1/tests/testsuite.lisp". > > Either > > 1) the file does not exist, or > > 2) we are not allowed to access the file, or > > 3) the pathname points to a broken symbolic link. > > > > Automatically continuing. > > To enable the Lisp debugger set *debugger-hook* to nil. > > > >>Maxima is not the most reliable program to begin with, and incorrect > >>code just makes it worse ... > > > > Maybe Y. Honda will read this thread and find some workaround? Maybe another compiler can be used on Android. In > any case, I've added a bug report to his repo on github referring to the discussion on this mailing list. > > > > > > -- > > Sent from my Android device with K-9 Mail. Please excuse my brevity. > > > > ------------------------------------------------------------------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Maxima-discuss mailing list > > Maxima-discuss@... > > https://lists.sourceforge.net/lists/listinfo/maxima-discuss > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Maxima-discuss mailing list > Maxima-discuss@... > https://lists.sourceforge.net/lists/listinfo/maxima-discuss ```
 Re: [Maxima-discuss] Maxima on Android: declare(antisymmetric) bug? From: Gunter Königsmann - 2017-08-06 18:28:58 ```> > I am sorry to be very late in following up this thread. I appreciate > all of the discussions appeared here. I am working on the next release > of MoA 3.1 Cool! MoA is a quite useful project. >, in which this declare(f, antisymmetric) issue will be > addressed. A few things to note: > - src and tests directories are entirely removed in the MoA releases > due to the apk file size limit. > - adding tests directory (using ADB) will enable you to run_testsuite(). > - I am running all the tests with run_testsuite() now, as I did so > back roughly two years when most of the tests were OK. > - There seems more errors now than I expected, 15 out of 11185 test > cases. I debugged most of them. Next release will address all of them. > Thanks in advance! As soon as ecl again passes all steps from the test suite I will add it to the nightly build for linux so we'll get informed if something breaks in the moment it does. Kind regards, Gunter. ```
 Re: [Maxima-discuss] Looking for Mac-based computer running Windows to maximize speed in running Maxima From: Gunter Königsmann - 2017-08-06 18:21:08 ```> Math Speak and Write worked on Windows XP / tablet. The project seemed > to attract > zero interest from the math community. The idea (of speaking > mathematical formulas > into a computer, in conjunction with writing on a tablet) was programmed > well before > Siri and Alexa, and when tablets were uncommon. Reviving msw would > probably > require reconsidering the underlying support systems which have changed > since 2004. Maybe it would get some traction today. > > For those of us who are fast and accurate typists, and usually use > computers > with keyboards, it is not so interesting to use. MSW was not perfectly > accurate or easy to use (accuracy improved by training per user); the > fact that no one other than my students ever tried to use it was sadA. > I demonstrated it (very successfully) at a math conference in > Minnesota; no interest then. > My guess is that it was just invented too early: Today that everyone has a tablet I would not say no to a faster method of typing in equations for maxima on android... Kind regards, Gunter. ```
 Re: [Maxima-discuss] Maxima on Android: declare(antisymmetric) bug? From: 本田康晃 - 2017-08-06 15:51:12 ```Dear all in this thread, I am sorry to be very late in following up this thread. I appreciate all of the discussions appeared here. I am working on the next release of MoA 3.1, in which this declare(f, antisymmetric) issue will be addressed. A few things to note: - src and tests directories are entirely removed in the MoA releases due to the apk file size limit. - adding tests directory (using ADB) will enable you to run_testsuite(). - I am running all the tests with run_testsuite() now, as I did so back roughly two years when most of the tests were OK. - There seems more errors now than I expected, 15 out of 11185 test cases. I debugged most of them. Next release will address all of them. Thanks and best regards, Yasuaki Honda, Chiba, Japan 2017-07-14 2:58 GMT+09:00 Stanislav Maslovski : > Hi, > > On July 13, 2017 5:45:49 AM GMT+01:00, Robert Dodier wrote: >>Can you run_testsuite(); (without loading foo.lisp)? Do you get any >>test failures? > > Unfortunately, in Maxima on Android the test suite seems to be stripped off: > > (%i1) run_testsuite(); > > Maxima encountered a Lisp error: > > Filesystem error with pathname #P"/data/user/0/jp.yhonda/files/maxima-5.39.1/tests/testsuite.lisp". > Either > 1) the file does not exist, or > 2) we are not allowed to access the file, or > 3) the pathname points to a broken symbolic link. > > Automatically continuing. > To enable the Lisp debugger set *debugger-hook* to nil. > >>Maxima is not the most reliable program to begin with, and incorrect >>code just makes it worse ... > > Maybe Y. Honda will read this thread and find some workaround? Maybe another compiler can be used on Android. In any case, I've added a bug report to his repo on github referring to the discussion on this mailing list. > > > -- > Sent from my Android device with K-9 Mail. Please excuse my brevity. > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Maxima-discuss mailing list > Maxima-discuss@... > https://lists.sourceforge.net/lists/listinfo/maxima-discuss ```
 Re: [Maxima-discuss] Looking for Mac-based computer running Windows to maximize speed in running Maxima From: Richard Fateman - 2017-08-06 14:15:02 ```On 8/6/2017 12:04 AM, Gould, Laurence wrote: > Thanks very much for letting me know about the options. They will > enable me to compare the benefit/cost of the two types of machines. > > If possible, I would be interested in your recommendation of any > book(s) or link(s) on Maxima which are good at explaining programming? > > Do you have a copy of your published paper? > https://people.eecs.berkeley.edu/~fateman/papers/hermite.pdf > ; > The Taylor series is one of the parts that caught my interest. This paper appears only on my web site (or if someone has copied it elsewhere). It is something of a hodge-podge of results, and some of the problems it solves seem to have been solved in other ways by different systems (in order to get very precise values of Bessel functions near zeros). > > Also, from your website, when calling up the link > https://people.eecs.berkeley.edu/~fateman/msw.html > ; leave off the "html" to get this. that is, https://people.eecs.berkeley.edu/~fateman/msw Math Speak and Write worked on Windows XP / tablet. The project seemed to attract zero interest from the math community. The idea (of speaking mathematical formulas into a computer, in conjunction with writing on a tablet) was programmed well before Siri and Alexa, and when tablets were uncommon. Reviving msw would probably require reconsidering the underlying support systems which have changed since 2004. Maybe it would get some traction today. For those of us who are fast and accurate typists, and usually use computers with keyboards, it is not so interesting to use. MSW was not perfectly accurate or easy to use (accuracy improved by training per user); the fact that no one other than my students ever tried to use it was sad. I demonstrated it (very successfully) at a math conference in Minnesota; no interest then. RJF\ > I get the message "Resource not found" > > ```
 Re: [Maxima-discuss] Looking for Mac-based computer running Windows to maximize speed in running Maxima From: Gunter Königsmann - 2017-08-06 06:33:08 ```> >> But maybe you could recommend a Mac which runs the Windows environment >> as fast as possible to do the iterated computations I mentioned above. >> I am willing to spend the money to get the machine speed. >>and the If the maximum speed and amount of memory is needed: The windows version of maxima comes with a tool allows to select if to use a maxima that has been compiled with sbcl or a maxima that has been compiled with clisp: - clisp is extremely memory-efficient and is used by default - and sbcl is extremely fast instead, but by default limits itself to about one Gigabyte of physical memory. Which is no problem for your case: By adding -X "--dynamic-space-size n" (with n being slightly less than half the number of Megabytes of RAM your system provides) to the command-line (in wxMaxima's config dialogue this setting can be changed in the "maxima" tab) it can be told to use all the available memory instead. Kind regards, Gunter. ```
 Re: [Maxima-discuss] Looking for Mac-based computer running Windows to maximize speed in running Maxima From: Richard Fateman - 2017-08-05 23:02:02 Attachments: Message as HTML ```On 8/5/2017 3:05 PM, Gould, Laurence wrote: > Dear Professor Fateman, > > I got your email address from your website, > https://people.eecs.berkeley.edu/~fateman > / (I remember having a > little email interaction with you pertaining to Maxima, back in the ‘90s.) > > I have been using Maxima (Windows environment) for years. The Windows > environment enable me to have a more attractive input and output than > does the Mac environment. I have both Mac and Windows computers running Maxima. There should not be any difference between them using the wxmaxima front end, which I think is pretty good. > > To the issue: I am a Mac user that has Windows running under Bootcamp > on my MacBook Pro. I understand that Bootcamp is no longer used by > Apple for its current machines. However I was told that I could use > a program like Parallels to run MacOS and Windows at the same time. > > That’s of particular importance because I have written a Maxima > program (which I’ve downloaded from SourceForge) that appears best in > a Windows environment with the GUI interface. However, my program > does multiple iterated mathematical operations — specifically, > multiple differentiations (such as those done in computing successive > terms in a Taylor expansion) to calculate nth-order derivatives. I > would like to be able to take n to be as large as possible while > having the computation not taking too much time. I realize that the > CPU time should be larger as n becomes larger. Sure > > So it appears that I should consider the Apple Mac Pro if I’m looking > for speed. I don't know why the Apple Mac Pro should be especially fast. Windows systems are far less expensive and can, I think, be upgraded to more memory. I may be misinformed but I think the maximum memory on a Mac may be 16GB. Or maybe that is just the macbook limit. And the prices tend to be 2x or 3x what you get In any case, the Windows 10 limit, depending on which version, seems to allow 128GB (windows 10 home, 64 bit) and possibly more. I just looked at Dell's "Alienware" product line, and for \$2,700 (a LOT for a Dell product -- you can get systems for \$500), you get an intel 7 cpu running over-clocked at 4.4GHz, 64GB of RAM, 1 TB of disk, running Windows 10 Pro. and HP has HP Z240 customizable tower computer, that can be similarly configured. I think either system would run Maxima quite well. (Of course you could run it on one of those \$500 machines with 8GB of memory, too. Just maybe not for large problems. > But maybe you could recommend a Mac which runs the Windows environment > as fast as possible to do the iterated computations I mentioned above. > I am willing to spend the money to get the machine speed. > > > Thanks for your consideration and > > Best Regards, > > Larry > > ____________________________________ > > Laurence I. Gould > > Professor of Physics, University of Hartford > > lgould@... > > (860) 768-4307 > > ```
 [Maxima-discuss] Looking for Mac-based computer running Windows to maximize speed From: Gould, Laurence - 2017-08-05 22:10:18 Attachments: Message as HTML ```Dear Colleagues, I am a Mac user that has Windows running under Bootcamp on my MacBook Pro. I understand that Bootcamp is no longer used by Apple for its current machines. However I was told that I could use a program like Parallels to run MacOS and Windows at the same time. That’s of particular importance because I have written a Maxima program (which I’ve downloaded from SourceForge) that appears best in a Windows environment with the GUI interface. However, my program does multiple iterated mathematical operations — specifically, multiple differentiations (such as those done in computing successive terms in a Taylor expansion) to calculate nth-order derivatives. I would like to be able to take n to be as large as possible while having the computation not taking too much time. I realize that the CPU time should be larger as n becomes larger So it appears that I should consider the Apple Mac Pro if I’m looking for speed. But maybe some of you could recommend a Mac which runs the Windows environment as fast as possible to do the iterated computations I mentioned above. I am willing to spend the money to get the machine speed. Thanks for your consideration, Larry ____________________________________ Laurence I. Gould Professor of Physics, University of Hartford lgould@... (860) 768-4307 ```
 Re: [Maxima-discuss] Installing 5.40 on MacOS From: 有坂富雄 - 2017-08-05 09:13:24 Attachments: text/plain ```Necessary shell variables are embedded in each launcher of Maxima.app (5.40.0). The source code of the launcher is included in the folder "Launchers/sources" of the mounted disc image. For instance, double-click the icon of "Rmaxima.scpt", then the file "Rmaxima.scpt" is opened by "Script Editor.app". so that you can get the shell variable. Thanks, Tomio Arisaka On 2017-8-5, 有坂富雄 wrote: > Hello, > > Would you please read the following post of this mailing list. > > https://sourceforge.net/p/maxima/mailman/message/35906912/ > > https://sourceforge.net/p/maxima/mailman/message/35910588/ > > https://sourceforge.net/p/maxima/mailman/message/35911771/ > > Thanks, > > Tomio Arisaka > > > On 2017-08-05, "Stavros Macrakis (Σταῦρος Μακράκης)" wrote: > > > I dragged Maxima to Applications. > > > > When I click on Maxima, I get "Verifying "Maxima"...". I get a security > > popup asking me to authorize running this binary, and say yes. > > > > Then I get: “Maxima” is damaged and can’t be opened. You should move it to > > the Trash. > > > > All I want is command-line Maxima, *without* rlwrap, because I run it under > > emacs. > > > > Where is the binary for that? I tried running: > > > > > /Applications/Maxima.app/Contents/Resources/opt/bin/maxima > > fatal error encountered in SBCL pid 21668: > > can't load .core for different runtime, sorry > > ```
 Re: [Maxima-discuss] FOUND Run_testsuite() two times fails. From: Robert Dodier - 2017-08-05 05:54:46 ```On 2017-07-13, Thomas D. Dean wrote: > I looked at this the other way. My problem simplifies down to > 'example(syntax);' Changing '{' to '@{', etc., in the syntax example > gets away from the set operator. I believe this was an unintended side > effect. I've pushed commit e646bd5 which implements this suggestion. That seems to fix this particular issue, although running run_testsuite twice still causes a few other errors. best Robert Dodier ```
 Re: [Maxima-discuss] Installing 5.40 on MacOS From: 有坂富雄 - 2017-08-04 16:45:09 Attachments: text/plain ```Hello, Would you please read the following post of this mailing list. https://sourceforge.net/p/maxima/mailman/message/35906912/ https://sourceforge.net/p/maxima/mailman/message/35910588/ https://sourceforge.net/p/maxima/mailman/message/35911771/ Thanks, Tomio Arisaka On 2017-08-05, "Stavros Macrakis (Σταῦρος Μακράκης)" wrote: > I dragged Maxima to Applications. > > When I click on Maxima, I get "Verifying "Maxima"...". I get a security > popup asking me to authorize running this binary, and say yes. > > Then I get: “Maxima” is damaged and can’t be opened. You should move it to > the Trash. > > All I want is command-line Maxima, *without* rlwrap, because I run it under > emacs. > > Where is the binary for that? I tried running: > > > /Applications/Maxima.app/Contents/Resources/opt/bin/maxima > fatal error encountered in SBCL pid 21668: > can't load .core for different runtime, sorry > ```
 [Maxima-discuss] Installing 5.40 on MacOS From: Stavros Macrakis (Σταῦρος Μακράκης) - 2017-08-04 15:59:03 Attachments: Message as HTML ```I dragged Maxima to Applications. When I click on Maxima, I get "Verifying "Maxima"...". I get a security popup asking me to authorize running this binary, and say yes. Then I get: “Maxima” is damaged and can’t be opened. You should move it to the Trash. All I want is command-line Maxima, *without* rlwrap, because I run it under emacs. Where is the binary for that? I tried running: > /Applications/Maxima.app/Contents/Resources/opt/bin/maxima fatal error encountered in SBCL pid 21668: can't load .core for different runtime, sorry ```
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