Issue 1453 in sympy: create a function for expanding exp(x+y) -> exp(x)*exp(y)

Updates: Status: Fixed Comment #6 on issue 1453 by asmeurer: create a function for expanding exp(x+y) -> exp(x)*exp(y) http://code.google.com/p/sympy/issues/detail?id=1453 expand(), specifically expand(power_exp), now does this. -- You received this message because you are listed in t

Issue 1455 in sympy: Split expand so that it only expands a*(x+y) => a*x+a*y

Updates: Labels: -NeedsReview Comment #33 on issue 1455 by asmeurer: Split expand so that it only expands a*(x+y) => a*x+a*y http://code.google.com/p/sympy/issues/detail?id=1455 (No comment was entered for this change.) -- You received this message because you are listed in the owner

Issue 1445 in sympy: expand Integral fails when integration expression is expandable

Updates: Status: Fixed Comment #5 on issue 1445 by asmeurer: expand Integral fails when integration expression is expandable http://code.google.com/p/sympy/issues/detail?id=1445 (No comment was entered for this change.) -- You received this message because you are listed in the owner

Issue 1455 in sympy: Split expand so that it only expands a*(x+y) => a*x+a*y

Updates: Status: Fixed Comment #32 on issue 1455 by asmeurer: Split expand so that it only expands a*(x+y) => a*x+a*y http://code.google.com/p/sympy/issues/detail?id=1455 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC f

Issue 252 in sympy: automatic combining of exponentials and logarithms

Updates: Status: Fixed Comment #32 on issue 252 by asmeurer: automatic combining of exponentials and logarithms http://code.google.com/p/sympy/issues/detail?id=252 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields o

Issue 1496 in sympy: Pow does not properly extract (-1)**n as Mul does

Status: New Owner: asmeurer Labels: Type-Defect Priority-Medium New issue 1496 by asmeurer: Pow does not properly extract (-1)**n as Mul does http://code.google.com/p/sympy/issues/detail?id=1496 >>> print (y-3)**2 (-3 + y)**2 >>> print 2*(y-3)**2 2*(3 - y)**2 In the second one, Mul pulls out

Issue 1434 in sympy: substitution doesn't work for sqrt()

Comment #20 on issue 1434 by ondrej.certik: substitution doesn't work for sqrt() http://code.google.com/p/sympy/issues/detail?id=1434 +assert (-81) ** (S(2)/3) == 9 * (S-(3) ** (S(2)/3)) I think "S-(3)" should be "S(-3)" ? Otherwise +1. -- You received this message because you are li

Issue 1434 in sympy: substitution doesn't work for sqrt()

Updates: Labels: NeedsReview Comment #19 on issue 1434 by fab...@fseoane.net: substitution doesn't work for sqrt() http://code.google.com/p/sympy/issues/detail?id=1434 Right. I think the following should be enough diff --git a/sympy/core/tests/test_numbers.py b/sympy/core/tests/test

Issue 1487 in sympy: fcode: print sympy expressions as Fortran code

Comment #7 on issue 1487 by Toon.Verstraelen: fcode: print sympy expressions as Fortran code http://code.google.com/p/sympy/issues/detail?id=1487 Ok, what about this: an FCodePrinter and a StrictFCodePrinter FCodePrinter: geared towards fcode function and copy past usage. - Never raises an ex

Issue 1477 in sympy: Printing with double subscripts

Comment #10 on issue 1477 by Toon.Verstraelen: Printing with double subscripts http://code.google.com/p/sympy/issues/detail?id=1477 You're right, a double underscore can be implemented at the ccode level, no matter what convention we define for super- and subscript for symbol names. I'll t

Issue 1487 in sympy: fcode: print sympy expressions as Fortran code

Comment #6 on issue 1487 by Toon.Verstraelen: fcode: print sympy expressions as Fortran code http://code.google.com/p/sympy/issues/detail?id=1487 It surely helps. For a single person, it is hard see all the different ways people want to use ccode and fcode. All comments are welcome. Most of