Issue 1685 in sympy: Wrong result from collect(...) in simplify.py

Comment #2 on issue 1685 by smichr: Wrong result from collect(...) in simplify.py http://code.google.com/p/sympy/issues/detail?id=1685 Instead of making those changes, can figure out why has_deriv is coming back False when the pattern *does* have terms with derivatives? -- You received this

Issue 1650 in sympy: classify_ode can't match ODEs with dependent function term multiplying the differential

Comment #12 on issue 1650 by asmeurer: classify_ode can't match ODEs with dependent function term multiplying the differential http://code.google.com/p/sympy/issues/detail?id=1650 yes, as I noted above, 1st_exact is a special case here. Multiplying an exact ODE by something will make it not

Issue 1650 in sympy: classify_ode can't match ODEs with dependent function term multiplying the differential

Comment #11 on issue 1650 by smichr: classify_ode can't match ODEs with dependent function term multiplying the differential http://code.google.com/p/sympy/issues/detail?id=1650 regarding comment 4, here is a case where multiplying through by an f(x) changes the (perceived) class of ode: >>

Issue 1686 in sympy: collect() doesn't always collect derivatives correctly

Comment #1 on issue 1686 by asmeurer: collect() doesn't always collect derivatives correctly http://code.google.com/p/sympy/issues/detail?id=1686 By the way, this may have something to do with the way collect tries to collect powers of f(x) and derivatives of f(x) at the same time. But I hav

Issue 1686 in sympy: collect() doesn't always collect derivatives correctly

Status: Accepted Owner: asmeurer Labels: Type-Defect Priority-Medium New issue 1686 by asmeurer: collect() doesn't always collect derivatives correctly http://code.google.com/p/sympy/issues/detail?id=1686 In [1]: print collect(expand((1 + 2*x*f(x))/f(x) + (-x + f(x))*diff(f(x), x)/f(x)**2),

Issue 1650 in sympy: classify_ode can't match ODEs with dependent function term multiplying the differential

Comment #10 on issue 1650 by smichr: classify_ode can't match ODEs with dependent function term multiplying the differential http://code.google.com/p/sympy/issues/detail?id=1650 updated patch at smichr4 at github. -- You received this message because you are listed in the owner or CC fields o

Issue 1650 in sympy: classify_ode can't match ODEs with dependent function term multiplying the differential

Comment #9 on issue 1650 by asmeurer: classify_ode can't match ODEs with dependent function term multiplying the differential http://code.google.com/p/sympy/issues/detail?id=1650 Well, the one from comment 3 works, but still not the Bernoulli one. In [1]: classify_ode(2*x*f(x)*f(x).diff(x) +

Issue 1650 in sympy: classify_ode can't match ODEs with dependent function term multiplying the differential

Updates: Labels: NeedsReview Comment #8 on issue 1650 by smichr: classify_ode can't match ODEs with dependent function term multiplying the differential http://code.google.com/p/sympy/issues/detail?id=1650 Indeed, it doesn't. This must have slipped through the review process. The atta

Issue 1566 in sympy: Integral(expr, (x, None, 1)).doit() works, but not integrate(expr, (x, None, 1))

Comment #10 on issue 1566 by asmeurer: Integral(expr, (x, None, 1)).doit() works, but not integrate(expr, (x, None, 1)) http://code.google.com/p/sympy/issues/detail?id=1566 I went ahead and pushed this to github, since I had it in a branch anyway. http://github.com/asmeurer/sympy/tree/integra

Issue 1659 in sympy: evalf gets wrong answer on polynomial

Updates: Status: Started Cc: ondrej.certik Labels: NeedsReview Comment #17 on issue 1659 by smichr: evalf gets wrong answer on polynomial http://code.google.com/p/sympy/issues/detail?id=1659 there are some tests for this that perhaps didn't get added because of a patchi

Issue 1650 in sympy: classify_ode can't match ODEs with dependent function term multiplying the differential

Comment #7 on issue 1650 by asmeurer: classify_ode can't match ODEs with dependent function term multiplying the differential http://code.google.com/p/sympy/issues/detail?id=1650 Also, e85ae4436e22641ebc49d06b04673952bf42b9a3 didn't seem to include a test (which isn't surprising, seeing that

Issue 1650 in sympy: classify_ode can't match ODEs with dependent function term multiplying the differential

Updates: Summary: classify_ode can't match ODEs with dependent function term multiplying the differential Status: Accepted Labels: -NeedsReview Comment #6 on issue 1650 by asmeurer: classify_ode can't match ODEs with dependent function term multiplying the differential

Issue 1458 in sympy: numpy + geometry doesn't work on windows

Updates: Status: Fixed Comment #19 on issue 1458 by smichr: numpy + geometry doesn't work on windows http://code.google.com/p/sympy/issues/detail?id=1458 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this iss

Issue 1458 in sympy: numpy + geometry doesn't work on windows

Comment #18 on issue 1458 by kevingoo...@gmail.com: numpy + geometry doesn't work on windows http://code.google.com/p/sympy/issues/detail?id=1458 A version of the patch from comment 16 is checked in now: commit 7805a3fb1329a954e219c4e838862fcfd533990a Author: Kevin Goodsell Date: Mon Oct 1

Issue 1584 in sympy: as_numer_denom() returns wrong result when both num and den are negative

Updates: Status: Fixed Comment #4 on issue 1584 by smichr: as_numer_denom() returns wrong result when both num and den are negative http://code.google.com/p/sympy/issues/detail?id=1584 (No comment was entered for this change.) -- You received this message because you are listed in the

Issue 1648 in sympy: trigsimp fails

Updates: Status: Fixed Comment #6 on issue 1648 by smichr: trigsimp fails http://code.google.com/p/sympy/issues/detail?id=1648 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred th

Issue 1670 in sympy: f[:] should be f.args in sympy\concrete\sums_products.py

Updates: Status: Fixed Comment #3 on issue 1670 by smichr: f[:] should be f.args in sympy\concrete\sums_products.py http://code.google.com/p/sympy/issues/detail?id=1670 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fie

Issue 1609 in sympy: sign(x).is_zero fails and sign() oddities

Updates: Status: Fixed Comment #2 on issue 1609 by smichr: sign(x).is_zero fails and sign() oddities http://code.google.com/p/sympy/issues/detail?id=1609 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this iss

Issue 1661 in sympy: factorint(3,2) fails

Updates: Status: Fixed Comment #1 on issue 1661 by smichr: factorint(3,2) fails http://code.google.com/p/sympy/issues/detail?id=1661 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this issue, or because you star

Issue 1653 in sympy: list comprehension vs iterators

Updates: Status: Fixed Comment #1 on issue 1653 by smichr: list comprehension vs iterators http://code.google.com/p/sympy/issues/detail?id=1653 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this issue, or becau

Issue 1650 in sympy: classify_ode can't match Bernoulli ODE with dependent function term multiplying the differential

Updates: Status: Fixed Comment #5 on issue 1650 by smichr: classify_ode can't match Bernoulli ODE with dependent function term multiplying the differential http://code.google.com/p/sympy/issues/detail?id=1650 (No comment was entered for this change.) -- You received this message becau

Issue 1659 in sympy: evalf gets wrong answer on polynomial

Updates: Status: Fixed Comment #16 on issue 1659 by smichr: evalf gets wrong answer on polynomial http://code.google.com/p/sympy/issues/detail?id=1659 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this issue, o

Issue 1429 in sympy: matches fails to match differential equation

Updates: Status: Fixed Comment #10 on issue 1429 by smichr: matches fails to match differential equation http://code.google.com/p/sympy/issues/detail?id=1429 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this

Issue 1634 in sympy: Cannot compare NumberSymbols like pi and E

Updates: Status: Fixed Comment #3 on issue 1634 by smichr: Cannot compare NumberSymbols like pi and E http://code.google.com/p/sympy/issues/detail?id=1634 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this is

Issue 1477 in sympy: Printing with double subscripts

Updates: Status: Fixed Comment #27 on issue 1477 by smichr: Printing with double subscripts http://code.google.com/p/sympy/issues/detail?id=1477 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this issue, or beca

Issue 1618 in sympy: seterr divide flag setting is ignored

Updates: Status: Fixed Comment #1 on issue 1618 by smichr: seterr divide flag setting is ignored http://code.google.com/p/sympy/issues/detail?id=1618 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this issue, or

Issue 1643 in sympy: int(log(4,2).evalf())

Updates: Status: Fixed Comment #4 on issue 1643 by smichr: int(log(4,2).evalf()) http://code.google.com/p/sympy/issues/detail?id=1643 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields of this issue, or because you sta

Issue 1632 in sympy: nsolve needs to convert matrix of Eqs to expression

Updates: Status: Fixed Comment #1 on issue 1632 by smichr: nsolve needs to convert matrix of Eqs to expression http://code.google.com/p/sympy/issues/detail?id=1632 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fields o

Issue 1444 in sympy: ilcm in solve has wrong syntax for more than 2 arguments

Updates: Status: Fixed Comment #1 on issue 1444 by smichr: ilcm in solve has wrong syntax for more than 2 arguments http://code.google.com/p/sympy/issues/detail?id=1444 (No comment was entered for this change.) -- You received this message because you are listed in the owner or CC fie

Issue 1558 in sympy: NumberSymbol not recognized as a filter for atoms() and I has only type Atom

Updates: Status: Fixed Comment #5 on issue 1558 by smichr: NumberSymbol not recognized as a filter for atoms() and I has only type Atom http://code.google.com/p/sympy/issues/detail?id=1558 (No comment was entered for this change.) -- You received this message because you are listed in

Issue 93 in sympy: Square root denesting

Updates: Status: Accepted Comment #13 on issue 93 by asmeurer: Square root denesting http://code.google.com/p/sympy/issues/detail?id=93 Looking at the example at the end of the paper, I would say that it isn't all implemented yet: In [15]: sqrt((112 + 70*sqrt(2)) + (46 + 34*sqrt(2))*sq

Issue 1556 in sympy: evalf for (a+i*b)*(c+~0i) => ac + ~0i instead of ac + ibc

Updates: Status: Fixed Comment #2 on issue 1556 by asmeurer: evalf for (a+i*b)*(c+~0i) => ac + ~0i instead of ac + ibc http://code.google.com/p/sympy/issues/detail?id=1556 A quick git bisect shows that this has been fixed in commit 9d234a2fe83ffbf4256c486ca9618625b1c99a2d: commit 9d

Issue 93 in sympy: Square root denesting

Comment #12 on issue 93 by ronan.l...@gmail.com: Square root denesting http://code.google.com/p/sympy/issues/detail?id=93 This can be closed now, right? -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust

Issue 1556 in sympy: evalf for (a+i*b)*(c+~0i) => ac + ~0i instead of ac + ibc

Comment #1 on issue 1556 by and...@hotmail.com: evalf for (a+i*b)*(c+~0i) => ac + ~0i instead of ac + ibc http://code.google.com/p/sympy/issues/detail?id=1556 I was looking for bugs to fix as a way of familiarising myself with sympy. I tried this one, but I seem to get the correct results f

Issue 1685 in sympy: Wrong result from collect(...) in simplify.py

Updates: Status: Accepted Labels: NeedsBetterPatch Comment #1 on issue 1685 by asmeurer: Wrong result from collect(...) in simplify.py http://code.google.com/p/sympy/issues/detail?id=1685 Don't worry, your patch applies fine. Well, I can see the effect of your patch by changing

Issue 1685 in sympy: Wrong result from collect(...) in simplify.py

Status: New Owner: Labels: Type-Defect Priority-Medium New issue 1685 by and...@hotmail.com: Wrong result from collect(...) in simplify.py http://code.google.com/p/sympy/issues/detail?id=1685 Problem: The collect function in simplify.py gives the wrong result when the expression

Issue 1684 in sympy: trigsimp of cos(pi*n) if n is an integer

Updates: Status: Accepted Cc: hazelnusse Comment #1 on issue 1684 by asmeurer: trigsimp of cos(pi*n) if n is an integer http://code.google.com/p/sympy/issues/detail?id=1684 It should be (-1)**n, yes? I wonder if Luke has this implemented in his branch. -- You received this me

Issue 1684 in sympy: trigsimp of cos(pi*n) if n is an integer

Status: New Owner: Labels: Type-Defect Priority-Medium New issue 1684 by satels: trigsimp of cos(pi*n) if n is an integer http://code.google.com/p/sympy/issues/detail?id=1684 >> from sympy import trigsimp, Symbol >> from sympy import cos, pi >> n = Symbol('n', integer=True) >> cos(n*pi) cos