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• Forum thread added

  nathancarter created the Missing group files on Mac/Unix forum thread

  posted by nathancarter 129 days ago

• Tracker comment added

  sf-robot commented on the group files missing from mac .dmg ? artifact

  posted by sf-robot 159 days ago

• File released: /groupexplorer/2.2.0/GroupExplorer2.2.0.0.res.tgz

  posted 164 days ago

• File released: /groupexplorer/2.2.0/GroupExplorer2.2.0.0.dmg

  posted 164 days ago

• File released: /groupexplorer/2.2.0/GroupExplorerSetup2.2.0.0.exe

  posted 164 days ago

• Code committed

  nathancarter committed revision 18 to the Group Explorer SVN repository, changing 2 files

  posted by nathancarter 164 days ago

• Code committed

  nathancarter committed revision 17 to the Group Explorer SVN repository, changing 1 files

  posted by nathancarter 164 days ago

• Code committed

  nathancarter committed revision 16 to the Group Explorer SVN repository, changing 32 files

  posted by nathancarter 164 days ago

• groupexplorer 2.2.0 file released: GroupExplorerSetup2.2.0.0.exe

  2009.05.29 - Released version 2.2.0.0 with the following changes: Did ticket 7, which was the removal of the QtUndo Solution (which kept Linux users from being allowed to use undo/redo) and replaced it with the new Qt4 QUndo Framework. 2009.05.28 Tested on Ubuntu 9.04 with Qt 4.5.0 and made such changes as necessary to get it to compile and run well. Merged changes from branch "toQt4" (r5-r12) into trunk. 2009.05.19 Updated to work with MinGW compiler on windows (which uses "small" as a keyword--so every variable named "small" became "smallv"). Fixed bug in preferences which did not correctly save the "firstTime" variable. Removed unnecessary debugging messages. Fixed bug that made sheet previews of 3D visualizers (Cayley diagrams and symmetry objects) ugly. Fixed bug that made element locations incorrect on sheet visualizers, which made arrows drawn crazily. 2009.05.15 Lots of little fixes to get it to compile and run and not crash. Bugs in toolbars removed; save and print work again in large visualizers, asymptote debugging output removed. Fixed bug in which proper subgroups of a p-group were being reported as Sylow p-subgroups. 2007.09.25 - Released version 2.1.1.0 with the following changes: The bogus toolbar button on visualizers (saying "Dump .asy code") was accidentally included in the 2.1.0.0 release, but it is actually only for internal use. It has been removed in this release. This release is now a universal binary for Mac OS X. 2007.07.19 - Released version 2.1.0.0 with the following fixes: 2007.07.18 Chunking was wrongly implemented whenever the order column in the generator table in a Cayley diagram (large visualizer) was not in the default order (innermost to outermost as you read down the rows). In fact, it turns out that when that order is not preserved, chunking subgroups can sometimes be hard or impossible, depending on the group. So the fix to this bug is that you can now only use chunking if the order column in the generator table is the default, as described above. (Corresponding change to documentation page was also made--open help, open User Manual, open Cayley diagram interface, scroll down to either the section on "An order for nesting the axes" or the section on "Chunking." Symmetry objects were only created once in memory. So if you opened two visualizers for the same one and changed the node radius (for example) in one, it changed in the other also. This has been fixed to be more like the expected behavior; each visualization is its own copy and they do not interact. Three-dimensional views (e.g., Cayley diagrams, symmetry objects) used to resize in the following biased way: Vertical resizing shrank the picture as much as was needed to still fit in the viewing area. Horizontal resizing, however, kept the picture the same size and cropped its edges if needed. Now both work the same way: The picture resizes to fit the size of the viewing area. Yes, QtUndo is now no longer required! So Linux (and other users building from sources) can build a version of Group Explorer for whatever OS they have Qt3 for! (That version will not have Undo/Redo functionality.) The SRC_README file was correspondingly improved to make building from source more understandable. 2007.07.17 Any sheet that Group Explorer generates for you now turns off labels in any Cayley diagram in that sheet. Thus the diagrams will be a bit less cluttered and will generate a bit faster. Hovering your mouse over chunked portions of a Cayley diagram now gives you tooltips to tell you what coset they represent. When loading a group from a .group file, Group Explorer now checks to be sure the multiplication table in the file does indeed represent a group. This never caused me problems before, because I only handed the program valid groups, and only distributed valid groups. But it never hurts to be careful. Sometimes chunks made bad decisions about what size to be, and they would be too skinny and exclude some nodes that they should have contained. This is fixed. 2007.07.16 I think that it is now the case that if you shut down GE when it is on a second monitor, then disconnect that monitor and restart GE, that it will be smart enough to not reposition itself off screen where you can't see it. I think. Let me know if I'm wrong! It is now the case that the Windows uninstaller removes all the files it's supposed to, including the Resources/ directory. I changed all the files that come built in to the group library (in the Resources/groups directory on Windows, or in the GroupExplorer.app/Resoureces/groups directory on Mac) so that they order the elements in a sensible way based on how the group is generatoed. This "way" is the same way that multiplication tables in Group Explorer have ordered the elements by default for some time now; it's based on left cosets of the subgroups generated by an initial segment of the generators list. THe end benefit is that elements are always (wherever they're mentioned, even in the group info windows and in custom representations) ordered in a sensible way. (No more cyclic subgroups whose element lists are something like e,a^2,a^3,a^4,a, when obviously you'd rather it be listed e,a,a^2,a^3,a^4.) 2007.02.12 Fixed the multiplication tables so that they behave as docu- mented, which means that they do row*col instead of col*row. This is what you would expect them to do anyway, even if the documentation hadn't said so! 2006.09.18 Fixed the fact that the "Chunk by cosets of" combo box in Cayley Diagrams was incorrectly naming the subgroups. 2006.08.15 - Released version 2.0.9.2 just to get an important bug fix out there 2006.08.15 Thanks to Nilo for pointing out that once in a great while, GE actually *misses* a subset of a group. This is obviously a heinous bug, and so you'll all surely want to download the new release that fixes this problem. For instance, in the extra_groups.zip file, the third group of order 30, called 3003 in GE, should have 3 subgroups of order 10, not only 2. 2006.07.15 Updated web version of online help because there were a few broken links. Those same broken links are in the actual GE help in the software, and have also been fixed, and will thus show up in the next release. 2006.07.14 - Released version 2.0.9 and web version of help 2006.07.13 I think that the incorrect sorting of groups by order on X11 systems is now fixed. The Windows installer for the 2.0.5 release forgot to include a necessary DLL, namely cm3250mt.dll. The Windows installer for the 2.0.9 release contains (and installs!) this DLL. 2006.07.04 In Cayley diagrams that were created as part of sheets, the drop-down list allowing you to choose a custom diagram vs. an auto-generated one was unreliable. This has been fixed. 2006.07.03 In some Cayley diagrams, the default choice of arrows was not consistent depending on what button you clicked to generate the diagram. This has been fixed. 2006.06.27 Changed Group Explorer release number, something which I forgot to do last release, so the program told you that it was version 2.0.0 even though it was version 2.0.5. If you try to use/view a group that's not loaded (say via a link in the help system, or in a sheet you load) you will get a warning message shown explaining why and how you can fix it by changing your preferences. Formerly, these errors were not shown, and therefore it was quite confusing. This file got reordered to have newer things on top, which makes more sense. 2006.06.23 - Released version 2.0.5 and extra group files 2006.06.22 A library of groups of orders 22 to 40 has been made, using the work of Bayard Webb and Ed Keppelmann who make the software FGB (Finite Group Behavior). It is downloadable separately. 2006.06.20 It is now possible to organize by subgroups in Cayley diagrams. Right click on the generator table and choose "Organize by..." Occasionally obnoxiously oblong rectangular solids were used for chunking; that is no longer the case. Chunks covering a flat coset will be somewhat flat themselves. Double-clicking a non-user-defined subset in any visualizer now shows you the elements of that subset. You no longer have to go through the steps of clicking the What's This? button or pressing Shift-F1. 2006.05.13 Various debugging messages accidentally showing on the console has been suppressed. Group info windows now put captions on OSs and CGs. This enables searching for something like "triangle" and being directed to the group info window for S_3, for instance. 2006.04.20 This file was begun to document bug fixes and feature additions to Group Explorer v2.

  posted 164 days ago

• groupexplorer 2.2.0 file released: GroupExplorer2.2.0.0.res.tgz

  2009.05.29 - Released version 2.2.0.0 with the following changes: Did ticket 7, which was the removal of the QtUndo Solution (which kept Linux users from being allowed to use undo/redo) and replaced it with the new Qt4 QUndo Framework. 2009.05.28 Tested on Ubuntu 9.04 with Qt 4.5.0 and made such changes as necessary to get it to compile and run well. Merged changes from branch "toQt4" (r5-r12) into trunk. 2009.05.19 Updated to work with MinGW compiler on windows (which uses "small" as a keyword--so every variable named "small" became "smallv"). Fixed bug in preferences which did not correctly save the "firstTime" variable. Removed unnecessary debugging messages. Fixed bug that made sheet previews of 3D visualizers (Cayley diagrams and symmetry objects) ugly. Fixed bug that made element locations incorrect on sheet visualizers, which made arrows drawn crazily. 2009.05.15 Lots of little fixes to get it to compile and run and not crash. Bugs in toolbars removed; save and print work again in large visualizers, asymptote debugging output removed. Fixed bug in which proper subgroups of a p-group were being reported as Sylow p-subgroups. 2007.09.25 - Released version 2.1.1.0 with the following changes: The bogus toolbar button on visualizers (saying "Dump .asy code") was accidentally included in the 2.1.0.0 release, but it is actually only for internal use. It has been removed in this release. This release is now a universal binary for Mac OS X. 2007.07.19 - Released version 2.1.0.0 with the following fixes: 2007.07.18 Chunking was wrongly implemented whenever the order column in the generator table in a Cayley diagram (large visualizer) was not in the default order (innermost to outermost as you read down the rows). In fact, it turns out that when that order is not preserved, chunking subgroups can sometimes be hard or impossible, depending on the group. So the fix to this bug is that you can now only use chunking if the order column in the generator table is the default, as described above. (Corresponding change to documentation page was also made--open help, open User Manual, open Cayley diagram interface, scroll down to either the section on "An order for nesting the axes" or the section on "Chunking." Symmetry objects were only created once in memory. So if you opened two visualizers for the same one and changed the node radius (for example) in one, it changed in the other also. This has been fixed to be more like the expected behavior; each visualization is its own copy and they do not interact. Three-dimensional views (e.g., Cayley diagrams, symmetry objects) used to resize in the following biased way: Vertical resizing shrank the picture as much as was needed to still fit in the viewing area. Horizontal resizing, however, kept the picture the same size and cropped its edges if needed. Now both work the same way: The picture resizes to fit the size of the viewing area. Yes, QtUndo is now no longer required! So Linux (and other users building from sources) can build a version of Group Explorer for whatever OS they have Qt3 for! (That version will not have Undo/Redo functionality.) The SRC_README file was correspondingly improved to make building from source more understandable. 2007.07.17 Any sheet that Group Explorer generates for you now turns off labels in any Cayley diagram in that sheet. Thus the diagrams will be a bit less cluttered and will generate a bit faster. Hovering your mouse over chunked portions of a Cayley diagram now gives you tooltips to tell you what coset they represent. When loading a group from a .group file, Group Explorer now checks to be sure the multiplication table in the file does indeed represent a group. This never caused me problems before, because I only handed the program valid groups, and only distributed valid groups. But it never hurts to be careful. Sometimes chunks made bad decisions about what size to be, and they would be too skinny and exclude some nodes that they should have contained. This is fixed. 2007.07.16 I think that it is now the case that if you shut down GE when it is on a second monitor, then disconnect that monitor and restart GE, that it will be smart enough to not reposition itself off screen where you can't see it. I think. Let me know if I'm wrong! It is now the case that the Windows uninstaller removes all the files it's supposed to, including the Resources/ directory. I changed all the files that come built in to the group library (in the Resources/groups directory on Windows, or in the GroupExplorer.app/Resoureces/groups directory on Mac) so that they order the elements in a sensible way based on how the group is generatoed. This "way" is the same way that multiplication tables in Group Explorer have ordered the elements by default for some time now; it's based on left cosets of the subgroups generated by an initial segment of the generators list. THe end benefit is that elements are always (wherever they're mentioned, even in the group info windows and in custom representations) ordered in a sensible way. (No more cyclic subgroups whose element lists are something like e,a^2,a^3,a^4,a, when obviously you'd rather it be listed e,a,a^2,a^3,a^4.) 2007.02.12 Fixed the multiplication tables so that they behave as docu- mented, which means that they do row*col instead of col*row. This is what you would expect them to do anyway, even if the documentation hadn't said so! 2006.09.18 Fixed the fact that the "Chunk by cosets of" combo box in Cayley Diagrams was incorrectly naming the subgroups. 2006.08.15 - Released version 2.0.9.2 just to get an important bug fix out there 2006.08.15 Thanks to Nilo for pointing out that once in a great while, GE actually *misses* a subset of a group. This is obviously a heinous bug, and so you'll all surely want to download the new release that fixes this problem. For instance, in the extra_groups.zip file, the third group of order 30, called 3003 in GE, should have 3 subgroups of order 10, not only 2. 2006.07.15 Updated web version of online help because there were a few broken links. Those same broken links are in the actual GE help in the software, and have also been fixed, and will thus show up in the next release. 2006.07.14 - Released version 2.0.9 and web version of help 2006.07.13 I think that the incorrect sorting of groups by order on X11 systems is now fixed. The Windows installer for the 2.0.5 release forgot to include a necessary DLL, namely cm3250mt.dll. The Windows installer for the 2.0.9 release contains (and installs!) this DLL. 2006.07.04 In Cayley diagrams that were created as part of sheets, the drop-down list allowing you to choose a custom diagram vs. an auto-generated one was unreliable. This has been fixed. 2006.07.03 In some Cayley diagrams, the default choice of arrows was not consistent depending on what button you clicked to generate the diagram. This has been fixed. 2006.06.27 Changed Group Explorer release number, something which I forgot to do last release, so the program told you that it was version 2.0.0 even though it was version 2.0.5. If you try to use/view a group that's not loaded (say via a link in the help system, or in a sheet you load) you will get a warning message shown explaining why and how you can fix it by changing your preferences. Formerly, these errors were not shown, and therefore it was quite confusing. This file got reordered to have newer things on top, which makes more sense. 2006.06.23 - Released version 2.0.5 and extra group files 2006.06.22 A library of groups of orders 22 to 40 has been made, using the work of Bayard Webb and Ed Keppelmann who make the software FGB (Finite Group Behavior). It is downloadable separately. 2006.06.20 It is now possible to organize by subgroups in Cayley diagrams. Right click on the generator table and choose "Organize by..." Occasionally obnoxiously oblong rectangular solids were used for chunking; that is no longer the case. Chunks covering a flat coset will be somewhat flat themselves. Double-clicking a non-user-defined subset in any visualizer now shows you the elements of that subset. You no longer have to go through the steps of clicking the What's This? button or pressing Shift-F1. 2006.05.13 Various debugging messages accidentally showing on the console has been suppressed. Group info windows now put captions on OSs and CGs. This enables searching for something like "triangle" and being directed to the group info window for S_3, for instance. 2006.04.20 This file was begun to document bug fixes and feature additions to Group Explorer v2.

  posted 164 days ago