## [Maxima-bugs] [ maxima-Bugs-625226 ] Factor errors: finite modulus, 3 vrbls

 [Maxima-bugs] [ maxima-Bugs-625226 ] Factor errors: finite modulus, 3 vrbls From: - 2002-10-18 16:39:33 ```Bugs item #625226, was opened at 2002-10-18 09:50 You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=625226&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Stavros Macrakis (macrakis) Assigned to: Nobody/Anonymous (nobody) Summary: Factor errors: finite modulus, 3 vrbls Initial Comment: poly: (x+y+z)*(w+y+z)*(w+x+z); factor(rat(poly)),modulus:2; => Not enough choices for substitution. -- an error. factor(rat(poly)),modulus:3 => irreducible (WRONG) factor(rat(poly)),modulus:5 => OK factor(rat(poly)),modulus:1031 => OK factor(rat(poly)),modulus:1048583 => OK (but slow) poly1: (y+x)*(z+x)*(z+x+w)*(z+y)*(z+y+w)*(z+y+x) factor(rat(poly1)),modulus: xxx => Not enough choices for substitution. -- an error. for modulus= 2,3,5,7,11,1031,1048583 ---------------------------------------------------------------------- >Comment By: Stavros Macrakis (macrakis) Date: 2002-10-18 12:39 Message: Logged In: YES user_id=588346 factor(rat(x^5+y^5)),modulus:2 also thinks it's irreducible, but in fact it is = (y+x)*(y^4+x*y^3+x^2*y^2+x^3*y+x^4). ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=625226&group_id=4933 ```

 [Maxima-bugs] [ maxima-Bugs-625226 ] Factor errors: finite modulus, 3 vrbls From: - 2002-10-18 13:50:48 ```Bugs item #625226, was opened at 2002-10-18 09:50 You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=625226&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Stavros Macrakis (macrakis) Assigned to: Nobody/Anonymous (nobody) Summary: Factor errors: finite modulus, 3 vrbls Initial Comment: poly: (x+y+z)*(w+y+z)*(w+x+z); factor(rat(poly)),modulus:2; => Not enough choices for substitution. -- an error. factor(rat(poly)),modulus:3 => irreducible (WRONG) factor(rat(poly)),modulus:5 => OK factor(rat(poly)),modulus:1031 => OK factor(rat(poly)),modulus:1048583 => OK (but slow) poly1: (y+x)*(z+x)*(z+x+w)*(z+y)*(z+y+w)*(z+y+x) factor(rat(poly1)),modulus: xxx => Not enough choices for substitution. -- an error. for modulus= 2,3,5,7,11,1031,1048583 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=625226&group_id=4933 ```
 [Maxima-bugs] [ maxima-Bugs-625226 ] Factor errors: finite modulus, 3 vrbls From: - 2002-10-18 16:39:33 ```Bugs item #625226, was opened at 2002-10-18 09:50 You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=625226&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Stavros Macrakis (macrakis) Assigned to: Nobody/Anonymous (nobody) Summary: Factor errors: finite modulus, 3 vrbls Initial Comment: poly: (x+y+z)*(w+y+z)*(w+x+z); factor(rat(poly)),modulus:2; => Not enough choices for substitution. -- an error. factor(rat(poly)),modulus:3 => irreducible (WRONG) factor(rat(poly)),modulus:5 => OK factor(rat(poly)),modulus:1031 => OK factor(rat(poly)),modulus:1048583 => OK (but slow) poly1: (y+x)*(z+x)*(z+x+w)*(z+y)*(z+y+w)*(z+y+x) factor(rat(poly1)),modulus: xxx => Not enough choices for substitution. -- an error. for modulus= 2,3,5,7,11,1031,1048583 ---------------------------------------------------------------------- >Comment By: Stavros Macrakis (macrakis) Date: 2002-10-18 12:39 Message: Logged In: YES user_id=588346 factor(rat(x^5+y^5)),modulus:2 also thinks it's irreducible, but in fact it is = (y+x)*(y^4+x*y^3+x^2*y^2+x^3*y+x^4). ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=625226&group_id=4933 ```