#907 factorisation univariate polynomial in extension

closed
nobody
5
2012-12-04
2006-04-24
Anonymous
No

Un bug dans 5.9.2 (sur portable VAIO) qui n'existe
pas dans 5.6. (sur portable DELL) (voir plus bas) :

(%i1) f:x^8 - 4*x^7 - x^6 + 15*x^5 - 3*x^4 - 16*x^3 +
4*x^2 + 4*x - 1$
(%i2) factor(f,ev(f,x=x1));

Universal error handler called recursively (:ERROR
NIL CONDITIONS::CLCS-UNIVERSAL-ERROR-HANDLER ""
"Couldn't protect")
Maxima encountered a Lisp error:
Error in CONDITIONS::CLCS-UNIVERSAL-ERROR-HANDLER
[or a callee]: Caught fatal error [memory may be
damaged]
Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to
nil.
=======================
NO Problem si f:x^2+1$ et dans (sur un DELL):
(avec display2d: false; pour interfacer avec latex)
========================================
GCL (GNU Common Lisp) Version(2.4.1) Thu Apr 4
10:08:23 CST 2002
Licensed under GNU Library General Public License
Contains Enhancements by W. Schelter
Maxima 5.6 Thu Apr 4 10:08:07 CST 2002 (with
enhancements by W. Schelter).
(C7) factor(f,ev(f,x=x1));

(D7)
(x-x1)*(x1^7-3*x1^6-5*x1^5+15*x1^4+8*x1^3-18*x1^2-3*x1+x+3)

*(-x^5*x1^7+3*x^4*x1^7+2*x^3*x1^7-5*x^2*x1^7-x*x1^7+x1^7+3*x^5*x1^6

-10*x^4*x1^6-5*x^3*x1^6+17*x^2*x1^6+2*x*x1^6-3*x1^6

+5*x^5*x1^5-11*x^4*x1^5-13*x^3*x1^5+17*x^2*x1^5+8*x*x1^5

-5*x1^5-15*x^5*x1^4+45*x^4*x1^4+26*x^3*x1^4-75*x^2*x1^4

-11*x*x1^4+15*x1^4-8*x^5*x1^3+13*x^4*x1^3+28*x^3*x1^3

-18*x^2*x1^3-20*x*x1^3+8*x1^3+18*x^5*x1^2-51*x^4*x1^2

-31*x^3*x1^2+84*x^2*x1^2+13*x*x1^2-18*x1^2+4*x^5*x1

-6*x^4*x1-17*x^3*x1+8*x^2*x1+13*x*x1-4*x1+x^6-7*x^5
+9*x^4+14*x^3-17*x^2-6*x+5)

Annick Valibouze, Université Pierre et Marie Curie

Discussion

  • Robert Dodier

    Robert Dodier - 2006-08-24

    Logged In: YES
    user_id=501686

    Error for

    (%i1) f:x^8 - 4*x^7 - x^6 + 15*x^5 - 3*x^4 - 16*x^3 +
    4*x^2 + 4*x - 1$
    (%i2) factor(f,ev(f,x=x1));

    is not observed in Maxima 5.9.3.99rc2 / Linux with GCL
    2.6.7, nor SBCL 0.9.9, nor Clisp 2.38.

    Let's verify this one on Windows -- if it is not observed
    there we can close this report.

     
  • Robert Dodier

    Robert Dodier - 2006-08-24
    • labels: 460522 --> Lisp Core - Polynomials
    • milestone: 482214 --> To_be_reviewed
     
  • Dan Gildea

    Dan Gildea - 2007-11-17
    • status: open --> pending
     
  • SourceForge Robot

    • status: pending --> closed
     
  • SourceForge Robot

    Logged In: YES
    user_id=1312539
    Originator: NO

    This Tracker item was closed automatically by the system. It was
    previously set to a Pending status, and the original submitter
    did not respond within 14 days (the time period specified by
    the administrator of this Tracker).

     

Log in to post a comment.

Get latest updates about Open Source Projects, Conferences and News.

Sign up for the SourceForge newsletter:

JavaScript is required for this form.





No, thanks