Re: Issue 4106 in sympy: Diophantine Equations module missing some solutions

2013-11-13 Thread sympy
Comment #1 on issue 4106 by rathmann...@gmail.com: Diophantine Equations module missing some solutions http://code.google.com/p/sympy/issues/detail?id=4106 Please reject this bug. It was operator error -- I hadn't updated to the latest code in my development tree. With the latest version

Issue 4106 in sympy: Diophantine Equations module missing some solutions

2013-11-13 Thread sympy
Status: New Owner: Labels: Type-Defect Priority-Medium New issue 4106 by rathmann...@gmail.com: Diophantine Equations module missing some solutions http://code.google.com/p/sympy/issues/detail?id=4106 When I try the new GSOC Diophantine equations module, in at least one case, the resul

Issue 4105 in sympy: Matrix could use a free_symbols method

2013-11-13 Thread sympy
Status: Valid Owner: Labels: Type-Defect Priority-Medium New issue 4105 by smi...@gmail.com: Matrix could use a free_symbols method http://code.google.com/p/sympy/issues/detail?id=4105 eye(1).free_symbols Traceback (most recent call last): File "", line 1, in File "sympy\matrices\mat

Re: Issue 3148 in sympy: Too many constants from dsolve()

2013-11-13 Thread sympy
Comment #25 on issue 3148 by trel...@yahoo.com: Too many constants from dsolve() http://code.google.com/p/sympy/issues/detail?id=3148 Related to: Issue 1739 Issue 3907 Issue 3442 Issue 3851 -- You received this message because this project is configured to send all issue notifications to t

Re: Issue 3148 in sympy: Too many constants from dsolve()

2013-11-13 Thread sympy
Comment #24 on issue 3148 by trel...@yahoo.com: Too many constants from dsolve() http://code.google.com/p/sympy/issues/detail?id=3148 Related issues: href="http://code.google.com/p/sympy/issues/detail?id=1739";>1739<\a>, href="http://code.google.com/p/sympy/issues/detail?id=3907";>3907<\a>, h

Re: Issue 3993 in sympy: Cannot solve x*y'' - xy' + y = 0

2013-11-13 Thread sympy
Comment #3 on issue 3993 by trel...@yahoo.com: Cannot solve x*y'' - xy' + y = 0 http://code.google.com/p/sympy/issues/detail?id=3993 This is a 2nd order linear equation with variable coefficients. sympy currently correctly finds 1 solution. The second can be found using reduction of ord

Re: Issue 3148 in sympy: Too many constants from dsolve()

2013-11-13 Thread sympy
Comment #23 on issue 3148 by trel...@yahoo.com: Too many constants from dsolve() http://code.google.com/p/sympy/issues/detail?id=3148 I closed the pull request, since it was inadequate. Slow progress can be followed on https://github.com/zanzibar7/sympy/tree/dsolve_fixes Not yet ready f

Re: Issue 1739 in sympy: Constants 'C_i' in differential equations confuse solver

2013-11-13 Thread sympy
Comment #9 on issue 1739 by trel...@yahoo.com: Constants 'C_i' in differential equations confuse solver http://code.google.com/p/sympy/issues/detail?id=1739 I have branch with a working fix for this and other dsolve() issues. https://github.com/zanzibar7/sympy/tree/dsolve_fixes The answer r