Re: Issue 4112 in sympy: solve doesn't work with rational=True

2013-12-09 Thread sympy
Updates: Labels: NeedsReview smichr Comment #7 on issue 4112 by smi...@gmail.com: solve doesn't work with rational=True http://code.google.com/p/sympy/issues/detail?id=4112 (No comment was entered for this change.) -- You received this message because this project is configured to se

Re: Issue 4123 in sympy: Rational.__lt__ and friends needs to watch for nan

2013-12-09 Thread sympy
Updates: Status: Fixed Comment #3 on issue 4123 by smi...@gmail.com: Rational.__lt__ and friends needs to watch for nan http://code.google.com/p/sympy/issues/detail?id=4123 (No comment was entered for this change.) -- You received this message because this project is configured to se

Re: Issue 2115 in sympy: Move stuff from the Google Code SVN to git

2013-12-09 Thread sympy
Updates: Cc: asmeu...@gmail.com ondrej.c...@gmail.com Labels: -EasyToFix NeedsReview Comment #14 on issue 2115 by skirpic...@gmail.com: Move stuff from the Google Code SVN to git http://code.google.com/p/sympy/issues/detail?id=2115 Ok, now all (except wiki's content) is import

Re: Issue 3198 in sympy: Finish implementing Euler-Langrange equations

2013-12-09 Thread sympy
Updates: Status: Fixed Comment #8 on issue 3198 by smi...@gmail.com: Finish implementing Euler-Langrange equations http://code.google.com/p/sympy/issues/detail?id=3198 (No comment was entered for this change.) -- You received this message because this project is configured to send al

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #2 on issue 4122 by lucasbro...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 No. The greedy algorithm takes the largest unit fraction less than or equal to the target fraction at each iteration (see https://en.wikipedia.org/wiki/Greedy_algorithm_for

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #3 on issue 4122 by faisal.i...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 Is it fine if I start working on this ? -- You received this message because this project is configured to send all issue notifications to this address. You may adjust y

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #4 on issue 4122 by lucasbro...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 Sure! -- You received this message because this project is configured to send all issue notifications to this address. You may adjust your notification preferences at: h

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #5 on issue 4122 by faisal.i...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 Sorry, deleted my comment , my original comment was "Is it fine if I start working on this ". :) -- You received this message because this project is configured to send

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #6 on issue 4122 by lucasbro...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 Go ahead. -- You received this message because this project is configured to send all issue notifications to this address. You may adjust your notification preferences a

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #7 on issue 4122 by lucasbro...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 And, since the file I attached to my earlier email isn't showing up here, I'm attaching it specifically to this thread... Attachments: egypt.py 4.3 KB -- You r

Issue 4125 in sympy: Issues with Bessel functions

2013-12-09 Thread sympy
Status: New Owner: Labels: Type-Defect Priority-Medium New issue 4125 by greg.von...@gmail.com: Issues with Bessel functions http://code.google.com/p/sympy/issues/detail?id=4125 I am using version 0.7.2 and have identified three problems involving the Bessel functions. These were found i

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #8 on issue 4122 by lucasbro...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 I have now added two functions to the file to compute Engel expansions (Egyptian expansions in which each denominator is a multiple of the previous). I'm attaching the

Re: Issue 4122 in sympy: Egyptian fractions

2013-12-09 Thread sympy
Comment #9 on issue 4122 by lucasbro...@gmail.com: Egyptian fractions http://code.google.com/p/sympy/issues/detail?id=4122 Accidentally cut out a comment block describing Engel expansions more precisely: # Engel expansions are Egyptian fraction expansions such that each denominator # is

Re: Issue 4125 in sympy: Issues with Bessel functions

2013-12-09 Thread sympy
Comment #1 on issue 4125 by ondrej.c...@gmail.com: Issues with Bessel functions http://code.google.com/p/sympy/issues/detail?id=4125 I am attaching the script that Greg sent me. It prints: 1/2 besselk(1, 0)/(2*besseli(1, 0)) -oo -oo*sign(1/besseli(1, 0)) Attachments: singular.py 6

Issue 4126 in sympy: tikz backend for plot

2013-12-09 Thread sympy
Status: Valid Owner: Labels: Type-Enhancement Priority-Medium Printing Plotting New issue 4126 by asmeu...@gmail.com: tikz backend for plot http://code.google.com/p/sympy/issues/detail?id=4126 tikz has very nice plotting capabilities in LaTeX. It's not that hard to generate a very nice lo

Re: Issue 4125 in sympy: Issues with Bessel functions

2013-12-09 Thread sympy
Updates: Status: Valid Labels: Solvers Comment #2 on issue 4125 by asmeu...@gmail.com: Issues with Bessel functions http://code.google.com/p/sympy/issues/detail?id=4125 All of them give PoleError for me in master. By the way, 0.7.2 is actually quite old. I recommend using 0.7.4,

Re: Issue 4125 in sympy: Issues with Bessel functions

2013-12-09 Thread sympy
Comment #3 on issue 4125 by greg.von...@gmail.com: Issues with Bessel functions http://code.google.com/p/sympy/issues/detail?id=4125 I have upgraded to 0.7.4. Now attempting issue 2) above: from sympy import * x = Symbol('x') y1 = sqrt(x)*besseli(1,sqrt(8*x)) and get the PoleError as well (