Re: Issue 1768 in sympy: integrate(sin(x)*tan(x), x) fails but integrate(sin(x)**2/cos(x), x) doesn't

Comment #3 on issue 1768 by tarun.ga...@gmail.com: integrate(sin(x)*tan(x), x) fails but integrate(sin(x)**2/cos(x), x) doesn't http://code.google.com/p/sympy/issues/detail?id=1768 we can detect and replace all the trignometric functions like sinx,cosx etc.by symbolic notations like

Issue 3172 in sympy: KroneckerDelta contains secondquant-specific stuff

Status: Accepted Owner: Labels: Type-Defect Priority-Medium Quantum EasyToFix New issue 3172 by ronan.l...@gmail.com: KroneckerDelta contains secondquant-specific stuff http://code.google.com/p/sympy/issues/detail?id=3172 I think it would be better if sympy.functions didn't have any

Re: Issue 2559 in sympy: lack definite integral of |x^2-1|

Comment #4 on issue 2559 by tarun.ga...@gmail.com: lack definite integral of |x^2-1| http://code.google.com/p/sympy/issues/detail?id=2559 can integration of absolute values can be implemented by converting them to piecewise functions using the roots of the expressions and then the two

Re: Issue 2559 in sympy: lack definite integral of |x^2-1|

Comment #5 on issue 2559 by tarun.ga...@gmail.com: lack definite integral of |x^2-1| http://code.google.com/p/sympy/issues/detail?id=2559 Integration of absolute values can be implemented by converting them to piecewise functions using the roots of the expressions(equations) and then the

Re: Issue 3164 in sympy: cse fails when a non-Basic is created

Updates: Status: Fixed Comment #3 on issue 3164 by smi...@gmail.com: cse fails when a non-Basic is created http://code.google.com/p/sympy/issues/detail?id=3164 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups

Re: Issue 3167 in sympy: e.is_integer wrong

Updates: Labels: NeedsReview smichr Comment #4 on issue 3167 by smi...@gmail.com: e.is_integer wrong http://code.google.com/p/sympy/issues/detail?id=3167 https://github.com/sympy/sympy/pull/1153 -- You received this message because you are subscribed to the Google Groups sympy-issues

Re: Issue 3163 in sympy: Add._eval_subs problem

Updates: Status: Fixed Comment #4 on issue 3163 by smi...@gmail.com: Add._eval_subs problem http://code.google.com/p/sympy/issues/detail?id=3163 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups sympy-issues group.

Re: Issue 3146 in sympy: order of Boolean args when pprint'ed

Updates: Status: Fixed Comment #3 on issue 3146 by smi...@gmail.com: order of Boolean args when pprint'ed http://code.google.com/p/sympy/issues/detail?id=3146 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups

Re: Issue 3096 in sympy: S(1)**S.NaN == S.NaN

Updates: Status: Fixed Comment #2 on issue 3096 by smi...@gmail.com: S(1)**S.NaN == S.NaN http://code.google.com/p/sympy/issues/detail?id=3096 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups sympy-issues group. To

Re: Issue 3076 in sympy: nan**0 should be nan

Updates: Status: Fixed Comment #2 on issue 3076 by smi...@gmail.com: nan**0 should be nan http://code.google.com/p/sympy/issues/detail?id=3076 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups sympy-issues group. To

Re: Issue 3076 in sympy: nan**0 should be nan

Comment #3 on issue 3076 by smi...@gmail.com: nan**0 should be nan http://code.google.com/p/sympy/issues/detail?id=3076 nan**0 is 1 (in keeping with IEEE and python behavior). -- You received this message because you are subscribed to the Google Groups sympy-issues group. To post to this

Re: Issue 2052 in sympy: is_zero should default to None, not False

Updates: Labels: -CodeInCategory-Code -CodeInImportedIntoMelange smichr NeedsReview Comment #24 on issue 2052 by smi...@gmail.com: is_zero should default to None, not False http://code.google.com/p/sympy/issues/detail?id=2052 e.is_zero is now None in

Re: Issue 3068 in sympy: incorrect sign calculated

Updates: Labels: NeedsReview smichr Comment #7 on issue 3068 by smi...@gmail.com: incorrect sign calculated http://code.google.com/p/sympy/issues/detail?id=3068 In https://github.com/sympy/sympy/pull/1153 , sign(n - i) is now unevaluated. Perhaps the sign can be determined by

Re: Issue 3046 in sympy: divmod method needed for Rational

Updates: Status: Fixed Comment #4 on issue 3046 by smi...@gmail.com: divmod method needed for Rational http://code.google.com/p/sympy/issues/detail?id=3046 Now, divmod(Rational(1,2), 2) (0, 1/2) -- You received this message because you are subscribed to the Google Groups

Re: Issue 3033 in sympy: UndefinedFunction not returned from atoms

Updates: Status: Fixed Comment #8 on issue 3033 by smi...@gmail.com: UndefinedFunction not returned from atoms http://code.google.com/p/sympy/issues/detail?id=3033 documentation was added; the OP issue is WontFix -- You received this message because you are subscribed to the Google

Re: Issue 2900 in sympy: xreplace rebuilds expressions when there is no match

Updates: Status: Fixed Comment #4 on issue 2900 by smi...@gmail.com: xreplace rebuilds expressions when there is no match http://code.google.com/p/sympy/issues/detail?id=2900 Add(x, -x, evaluate=False).xreplace({y:1}) -x + x -- You received this message because you are

Issue 3173 in sympy: Compile issue: Generators are not supported

Status: New Owner: Labels: Type-Defect Priority-Medium New issue 3173 by bhaavanm...@gmail.com: Compile issue: Generators are not supported http://code.google.com/p/sympy/issues/detail?id=3173 I just downloaded the code through git, and ran python build.py. I got the following error:

Re: Issue 966 in sympy: extract minus sign issues (from comment 46ff) was Can't simplify exp(2 * pi * I * a) when a is integer

Updates: Status: Fixed Comment #77 on issue 966 by smi...@gmail.com: extract minus sign issues (from comment 46ff) was Can't simplify exp(2 * pi * I * a) when a is integer http://code.google.com/p/sympy/issues/detail?id=966 Perhaps this can be closed: a = Symbol(a, integer =

Re: Issue 2843 in sympy: nsimplify of longs fails

Updates: Status: Fixed Comment #3 on issue 2843 by smi...@gmail.com: nsimplify of longs fails http://code.google.com/p/sympy/issues/detail?id=2843 now nsimplify(1e11) 1000 nsimplify(1e12) 1 -- You received this message because you are subscribed

Re: Issue 2849 in sympy: integration of cos(x)/sin(x)**n

Updates: Labels: -smichr -NeedsReview Comment #6 on issue 2849 by smi...@gmail.com: integration of cos(x)/sin(x)**n http://code.google.com/p/sympy/issues/detail?id=2849 I pulled this request for lack of interest in my changes. -- You received this message because you are subscribed

Re: Issue 2707 in sympy: exctract_multiplicatively problem with Add in Mul

Updates: Status: Fixed Comment #3 on issue 2707 by smi...@gmail.com: exctract_multiplicatively problem with Add in Mul http://code.google.com/p/sympy/issues/detail?id=2707 Now, (y*(1+x)/2).extract_multiplicatively(y*(1+x)) 1/2 (y*x/2).extract_multiplicatively(y*x)

Re: Issue 2485 in sympy: multiset_partitions

Updates: Labels: -smichr -NeedsReview Comment #6 on issue 2485 by smi...@gmail.com: multiset_partitions http://code.google.com/p/sympy/issues/detail?id=2485 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups

Re: Issue 2462 in sympy: gcd_terms coeff absorbed

Updates: Status: Fixed Comment #2 on issue 2462 by smi...@gmail.com: gcd_terms coeff absorbed http://code.google.com/p/sympy/issues/detail?id=2462 gcd_terms(2+2*x) 2*(x + 1) -- You received this message because you are subscribed to the Google Groups sympy-issues group. To

Re: Issue 2191 in sympy: Collecting numerical prefactors

Updates: Labels: -NeedsReview -smichr Comment #5 on issue 2191 by smi...@gmail.com: Collecting numerical prefactors http://code.google.com/p/sympy/issues/detail?id=2191 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google

Re: Issue 2165 in sympy: Pow.is_bounded could handle more cases

Updates: Labels: -NeedsReview -smichr Comment #9 on issue 2165 by smi...@gmail.com: Pow.is_bounded could handle more cases http://code.google.com/p/sympy/issues/detail?id=2165 (No comment was entered for this change.) -- You received this message because you are subscribed to the

Re: Issue 1961 in sympy: integration works too hard

Updates: Labels: -smichr -NeedsReview Comment #12 on issue 1961 by smi...@gmail.com: integration works too hard http://code.google.com/p/sympy/issues/detail?id=1961 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups

Re: Issue 1855 in sympy: matrix gets a gcdfactor method

Updates: Status: WontFix Comment #6 on issue 1855 by smi...@gmail.com: matrix gets a gcdfactor method http://code.google.com/p/sympy/issues/detail?id=1855 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups

Re: Issue 1849 in sympy: expansion problem

Updates: Status: Fixed Comment #4 on issue 1849 by smi...@gmail.com: expansion problem http://code.google.com/p/sympy/issues/detail?id=1849 Now sqrt(t).is_real True sqrt(t.expand()).is_real True -- You received this message because you are subscribed to the Google

Re: Issue 1831 in sympy: ode can survive (so far) with less expansion

Updates: Labels: -NeedsReview -smichr Comment #6 on issue 1831 by smi...@gmail.com: ode can survive (so far) with less expansion http://code.google.com/p/sympy/issues/detail?id=1831 (No comment was entered for this change.) -- You received this message because you are subscribed to

Re: Issue 1818 in sympy: coeff and collect failures on x**(1+x)

Updates: Labels: -NeedsReview -smichr Comment #11 on issue 1818 by smi...@gmail.com: coeff and collect failures on x**(1+x) http://code.google.com/p/sympy/issues/detail?id=1818 (No comment was entered for this change.) -- You received this message because you are subscribed to the

Re: Issue 1812 in sympy: trigsimp helper hidden

Updates: Labels: -NeedsReview -smichr Comment #4 on issue 1812 by smi...@gmail.com: trigsimp helper hidden http://code.google.com/p/sympy/issues/detail?id=1812 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups

Re: Issue 1810 in sympy: separate is a wrapper

Updates: Status: Fixed Comment #3 on issue 1810 by smi...@gmail.com: separate is a wrapper http://code.google.com/p/sympy/issues/detail?id=1810 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups sympy-issues group. To

Re: Issue 1725 in sympy: Implement switch manager for expand() and possibly others

Updates: Labels: -NeedsReview -smichr Comment #32 on issue 1725 by smi...@gmail.com: Implement switch manager for expand() and possibly others http://code.google.com/p/sympy/issues/detail?id=1725 (No comment was entered for this change.) -- You received this message because you are

Re: Issue 1676 in sympy: simplification of type sin x.cos y + cos x.sin y = sin (x + y) does't work

Updates: Labels: -smichr -NeedsReview Comment #8 on issue 1676 by smi...@gmail.com: simplification of type sin x.cos y + cos x.sin y = sin (x + y) does't work http://code.google.com/p/sympy/issues/detail?id=1676 (No comment was entered for this change.) -- You received this

Re: Issue 1562 in sympy: Have trigsimp apply factor and Poly.cancel() to sin's and cos's

Updates: Labels: -NeedsReview -smichr Comment #22 on issue 1562 by smi...@gmail.com: Have trigsimp apply factor and Poly.cancel() to sin's and cos's http://code.google.com/p/sympy/issues/detail?id=1562 (No comment was entered for this change.) -- You received this message because

Re: Issue 1526 in sympy: simplification using trigsimp and collect

Updates: Labels: -smichr -NeedsReview Comment #8 on issue 1526 by smi...@gmail.com: simplification using trigsimp and collect http://code.google.com/p/sympy/issues/detail?id=1526 (No comment was entered for this change.) -- You received this message because you are subscribed to the

Re: Issue 1181 in sympy: Advanced trigonometric simplification

Updates: Labels: -smichr -NeedsReview Comment #7 on issue 1181 by smi...@gmail.com: Advanced trigonometric simplification http://code.google.com/p/sympy/issues/detail?id=1181 (No comment was entered for this change.) -- You received this message because you are subscribed to the

Re: Issue 1099 in sympy: collect sometimes doesn't collect inside brackets

Updates: Labels: -NeedsReview -smichr Comment #3 on issue 1099 by smi...@gmail.com: collect sometimes doesn't collect inside brackets http://code.google.com/p/sympy/issues/detail?id=1099 (No comment was entered for this change.) -- You received this message because you are

Re: Issue 1002 in sympy: Symbol('') does not raise an Exception

Updates: Labels: -NeedsReview -smichr Comment #10 on issue 1002 by smi...@gmail.com: Symbol('') does not raise an Exception http://code.google.com/p/sympy/issues/detail?id=1002 Pull request 417 was processed. This does not disallow a space as a symbol name, however...my reference

Re: Issue 509 in sympy: Collecting expressions containing a variable

Updates: Labels: -NeedsReview -smichr Comment #4 on issue 509 by smi...@gmail.com: Collecting expressions containing a variable http://code.google.com/p/sympy/issues/detail?id=509 pull request was pulled. -- You received this message because you are subscribed to the Google Groups

Re: Issue 3068 in sympy: incorrect sign calculated

Updates: Labels: -NeedsReview -smichr Comment #8 on issue 3068 by smi...@gmail.com: incorrect sign calculated http://code.google.com/p/sympy/issues/detail?id=3068 I'm not sure where to put that evaluation. Putting it at the end of Function.__new__ did not work for me. And sign doesn't

Issue 3174 in sympy: sum evalf is broken

Status: Accepted Owner: Labels: Type-Defect Priority-High New issue 3174 by smi...@gmail.com: sum evalf is broken http://code.google.com/p/sympy/issues/detail?id=3174 It is my impression that evalf really needs an overhaul, especially when it comes to handling evaluation of things that

Issue 3175 in sympy: Sum with reversed limits gives wrong answer

Status: Accepted Owner: Labels: Type-Defect Priority-Medium New issue 3175 by smi...@gmail.com: Sum with reversed limits gives wrong answer http://code.google.com/p/sympy/issues/detail?id=3175 Sum(x,(x,1,0)).n() 0.e-122 Sum(x,(x,0,1)).n() 1.00 -- You

Re: Issue 978 in sympy: extract (-1) from all expressions canonically

Updates: Labels: -Priority-High Priority-Medium Comment #10 on issue 978 by smi...@gmail.com: extract (-1) from all expressions canonically http://code.google.com/p/sympy/issues/detail?id=978 I'll leave this open and reduce the priority for two reasons; 1) although we now have

Re: Issue 2453 in sympy: abs(sympy.I * sympy.pi) evaluates incorrectly

Updates: Status: Fixed Comment #9 on issue 2453 by smi...@gmail.com: abs(sympy.I * sympy.pi) evaluates incorrectly http://code.google.com/p/sympy/issues/detail?id=2453 Everything here works in master: new session abs(I*pi) pi Abs(E*I) E ^Z restart

Re: Issue 2322 in sympy: is_real problems with (pi/log(real))

Comment #3 on issue 2322 by smi...@gmail.com: is_real problems with (pi/log(real)) http://code.google.com/p/sympy/issues/detail?id=2322 The old-style assumptions are working now: var('r', real=True) r (pi/log(r)).is_real (pi/log(r)).subs(r,-2).is_real

Re: Issue 2430 in sympy: Expression Countable Set

Updates: Status: Started Comment #10 on issue 2430 by mrock...@gmail.com: Expression Countable Set http://code.google.com/p/sympy/issues/detail?id=2430 https://github.com/sympy/sympy/pull/1155 -- You received this message because you are subscribed to the Google Groups sympy-issues

Re: Issue 2324 in sympy: i**2 is real and i**3 is not

Comment #2 on issue 2324 by sachin.i...@gmail.com: i**2 is real and i**3 is not http://code.google.com/p/sympy/issues/detail?id=2324 this might be a fix to the above issue https://github.com/sympy/sympy/pull/1156 -- You received this message because you are subscribed to the Google

Re: Issue 3142 in sympy: recursion error in sqrtdenest

Updates: Status: Fixed Comment #5 on issue 3142 by smi...@gmail.com: recursion error in sqrtdenest http://code.google.com/p/sympy/issues/detail?id=3142 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google Groups sympy-issues

Re: Issue 3161 in sympy: solve doesn't return conditions where solution might apply (was: multiplication by I breaks solve)

Comment #3 on issue 3161 by smi...@gmail.com: solve doesn't return conditions where solution might apply (was: multiplication by I breaks solve) http://code.google.com/p/sympy/issues/detail?id=3161 see also issue 2050 where expressions which are zero in one domain may not be zero

Re: Issue 3151 in sympy: Symbol needs an Hermitian assumption

Updates: Status: Started Labels: NeedsReview Comment #1 on issue 3151 by julien.r...@gmail.com: Symbol needs an Hermitian assumption http://code.google.com/p/sympy/issues/detail?id=3151 Implement (anti-)Hermitian assumption for symbols.

Re: Issue 3099 in sympy: Expr.is_constant() is very slow in some cases

Updates: Status: Fixed Comment #13 on issue 3099 by smi...@gmail.com: Expr.is_constant() is very slow in some cases http://code.google.com/p/sympy/issues/detail?id=3099 (No comment was entered for this change.) -- You received this message because you are subscribed to the Google

Re: Issue 3162 in sympy: Wrong result from as_real_imag

Updates: Status: Started Comment #3 on issue 3162 by smi...@gmail.com: Wrong result from as_real_imag http://code.google.com/p/sympy/issues/detail?id=3162 The wrong change was made to as_real_imag() inn 93e662db0b67e979f18dc. The recursive calling of add and mul to each other while

Re: Issue 3058 in sympy: solve cannot handle mixed trig functions

Comment #6 on issue 3058 by smi...@gmail.com: solve cannot handle mixed trig functions http://code.google.com/p/sympy/issues/detail?id=3058 hearing no interest, I will pull the request at https://github.com/sympy/sympy/pull/1063 -- You received this message because you are subscribed to

Re: Issue 3069 in sympy: dsolve gets too many constants for a first order linear ode

Updates: Labels: -NeedsReview -smichr Comment #6 on issue 3069 by smi...@gmail.com: dsolve gets too many constants for a first order linear ode http://code.google.com/p/sympy/issues/detail?id=3069 (No comment was entered for this change.) -- You received this message because you are

Re: Issue 2418 in sympy: Interval.evalf() returns a mpmath interval

Comment #8 on issue 2418 by mrock...@gmail.com: Interval.evalf() returns a mpmath interval http://code.google.com/p/sympy/issues/detail?id=2418 Interval already has a .to_mpi method. is .to_mpmath also necessary for some reason? -- You received this message because you are subscribed to

Re: Issue 3134 in sympy: Symbol(zero=True) probably shouldn't be allowed

Updates: Labels: smchr NeedsReview Comment #4 on issue 3134 by smi...@gmail.com: Symbol(zero=True) probably shouldn't be allowed http://code.google.com/p/sympy/issues/detail?id=3134 https://github.com/sympy/sympy/pull/1161 -- You received this message because you are subscribed to

Re: Issue 3176 in sympy: 0*oo is nan

Comment #1 on issue 3176 by asmeu...@gmail.com: 0*oo is nan http://code.google.com/p/sympy/issues/detail?id=3176 I see the inconsistency, but I don't think either change would be very appreciated. This is similar to x/x = 1 even though if x = 0, it is really nan. -- You received this

Re: Issue 3176 in sympy: 0*oo is nan

Comment #3 on issue 3176 by asmeu...@gmail.com: 0*oo is nan http://code.google.com/p/sympy/issues/detail?id=3176 I suppose we could write a document discussing this sort of thing somewhere. Or just add a few notes to the docstring of NaN. -- You received this message because you are

Re: Issue 3176 in sympy: document why 0*oo is nan but 0*x goes directly to 0

Updates: Summary: document why 0*oo is nan but 0*x goes directly to 0 Status: Valid Comment #4 on issue 3176 by smi...@gmail.com: document why 0*oo is nan but 0*x goes directly to 0 http://code.google.com/p/sympy/issues/detail?id=3176 I did add your comment to the XFAIL test

Re: Issue 3115 in sympy: ImportError: No module named pretty

Updates: Status: Invalid Comment #1 on issue 3115 by asmeu...@gmail.com: ImportError: No module named pretty http://code.google.com/p/sympy/issues/detail?id=3115 pretty should be in sympy/sympy/printing/pretty/. If this doesn't work, then maybe something happened to that

Re: Issue 2440 in sympy: Equal Integrals compare different when using different variables

Comment #16 on issue 2440 by asmeu...@gmail.com: Equal Integrals compare different when using different variables http://code.google.com/p/sympy/issues/detail?id=2440 You and I are thinking of doing in different ways. I would just start out with Integral(exp(-x**2), (x, -oo, oo)) *

Issue 3177 in sympy: ./bin/isympy

Status: New Owner: Labels: Type-Defect Priority-Medium New issue 3177 by manoj.ba...@gmail.com: ./bin/isympy http://code.google.com/p/sympy/issues/detail?id=3177 This is way simple than traditional shell in which we need to go import for the terms we call.Its doing good for linux but i

Re: Issue 2757 in sympy: Noncommutative functions do not work

Comment #3 on issue 2757 by asmeu...@gmail.com: Noncommutative functions do not work http://code.google.com/p/sympy/issues/detail?id=2757 Actually all assumptions are ignored on Function. -- You received this message because you are subscribed to the Google Groups sympy-issues group. To