Issue 2441 in sympy: sympify() should recognize and convert mpmath types

Status: Accepted Owner: renato.c...@gmail.com Labels: Type-Defect Priority-Medium New issue 2441 by renato.c...@gmail.com: sympify() should recognize and convert mpmath types http://code.google.com/p/sympy/issues/detail?id=2441 Currently sympifying mpmath mpf and mpc types works, but it

Re: Issue 2042 in sympy: Frac() object for rational function arithmetics

Comment #3 on issue 2042 by sherjilo...@gmail.com: Frac() object for rational function arithmetics http://code.google.com/p/sympy/issues/detail?id=2042 We should atleast implement a basic Frac object, even if its not as exhaustive as Polys, so that asmeurer and I can use it in our own

Re: Issue 2042 in sympy: Frac() object for rational function arithmetics

Comment #4 on issue 2042 by matt...@gmail.com: Frac() object for rational function arithmetics http://code.google.com/p/sympy/issues/detail?id=2042 In this issue we stated twice that Frac (or RationalFunction) should be based on DMF, which is a fairly complete low-level implementation of

Issue 2442 in sympy: Why does Lambda use Dummys?

Status: Accepted Owner: asmeurer Labels: Type-Defect Priority-Medium Printing New issue 2442 by asmeurer: Why does Lambda use Dummys? http://code.google.com/p/sympy/issues/detail?id=2442 We have In [19]: Lambda(x, x) Out[19]: Lambda(_x, _x) In [20]: Lambda(y, y) Out[20]: Lambda(_x, _x) The

Re: Issue 2441 in sympy: sympify() should recognize and convert mpmath types

Updates: Labels: EasyToFix Comment #1 on issue 2441 by renato.c...@gmail.com: sympify() should recognize and convert mpmath types http://code.google.com/p/sympy/issues/detail?id=2441 I intended to fix this using the class method Expr._from_mpmath, like this: from

Re: Issue 797 in sympy: bug in Lambda

Updates: Labels: -WrongResult Comment #13 on issue 797 by asmeurer: bug in Lambda http://code.google.com/p/sympy/issues/detail?id=797 I now get: In [17]: H = Lambda(f(x), diff(f(x), x,x) + x**2 *f(x)) ---

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

Comment #1 on issue 2440 by asmeurer: Equal Integrals compare different when using different variables http://code.google.com/p/sympy/issues/detail?id=2440 First, I want to remind that == is exact equality testing, not mathematical equatly testing. See

Re: Issue 2042 in sympy: Frac() object for rational function arithmetics

Comment #5 on issue 2042 by asmeurer: Frac() object for rational function arithmetics http://code.google.com/p/sympy/issues/detail?id=2042 What is the residue representation? If Frac() is not written from the start to keep the numerator and denominator canceled, then it will be almost the

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

Comment #2 on issue 2440 by renato.c...@gmail.com: Equal Integrals compare different when using different variables http://code.google.com/p/sympy/issues/detail?id=2440 My view is that dummy symbols shouldn't make a difference when comparing objects. In Integral you don't change all

Re: Issue 2297 in sympy: Integral manipulations

Comment #1 on issue 2297 by renato.c...@gmail.com: Integral manipulations http://code.google.com/p/sympy/issues/detail?id=2297 A nice addition, though I don't know if the current infra-structure supports this, would be to recognize even and odd functions and rewrite the intervals

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

Comment #3 on issue 2440 by asmeurer: Equal Integrals compare different when using different variables http://code.google.com/p/sympy/issues/detail?id=2440 Whatever we do, it should be uniform across all functions with expr.atoms(Symbol) != expr.free_symbols. This includes Lambda, Sum,

Re: Issue 1784 in sympy: ((x - 2)**2).match((x - a)**2) fails

Updates: Labels: Assumptions Comment #2 on issue 1784 by asmeurer: ((x - 2)**2).match((x - a)**2) fails http://code.google.com/p/sympy/issues/detail?id=1784 We should have even function and odd function assumptions. -- You received this message because you are subscribed to the Google

Re: Issue 2297 in sympy: Integral manipulations

Comment #2 on issue 2297 by asmeurer: Integral manipulations http://code.google.com/p/sympy/issues/detail?id=2297 See issue 1784. It would be nice to have even function and odd function assumptions. transform() only works for linear transformations, which makes it very limited. It ought

Re: Issue 2389 in sympy: Semantic inconsistency between Basic.__contains__ and Tuple.__contains__

Issue 2389: Semantic inconsistency between Basic.__contains__ and Tuple.__contains__ http://code.google.com/p/sympy/issues/detail?id=2389 This issue is now blocking issue 1953. See http://code.google.com/p/sympy/issues/detail?id=1953 -- You received this message because you are listed in the

Re: Issue 1953 in sympy: inconsistency between in and has

Updates: Blockedon: 2389 Comment #5 on issue 1953 by asmeurer: inconsistency between in and has http://code.google.com/p/sympy/issues/detail?id=1953 See issue 2389. Actually, this issue and that one might be considered duplicates, depending on how you look at it. -- You received

Issue 2443 in sympy: Result of subs() is incorrect after unpickling

Status: New Owner: Labels: Type-Defect Priority-Medium New issue 2443 by adampaet...@gmail.com: Result of subs() is incorrect after unpickling http://code.google.com/p/sympy/issues/detail?id=2443 After pickling and then unpickling the attached symbolic expression, the value returned

Issue 2444 in sympy: even function and odd function assumptions

Status: Accepted Owner: asmeurer Labels: Type-Enhancement Priority-Medium Assumptions New issue 2444 by asmeurer: even function and odd function assumptions http://code.google.com/p/sympy/issues/detail?id=2444 This was already requested in issue 1784 and issue 2297. It would be nice to be

Re: Issue 1784 in sympy: ((x - 2)**2).match((x - a)**2) fails

Updates: Blockedon: 2444 Comment #3 on issue 1784 by asmeurer: ((x - 2)**2).match((x - a)**2) fails http://code.google.com/p/sympy/issues/detail?id=1784 See issue 2444. -- You received this message because you are subscribed to the Google Groups sympy-issues group. To post to this

Re: Issue 2444 in sympy: even function and odd function assumptions

Issue 2444: even function and odd function assumptions http://code.google.com/p/sympy/issues/detail?id=2444 This issue is now blocking issue 1784. See http://code.google.com/p/sympy/issues/detail?id=1784 -- You received this message because you are listed in the owner or CC fields of this

Re: Issue 2297 in sympy: Integral manipulations

Updates: Blockedon: 2444 Comment #3 on issue 2297 by asmeurer: Integral manipulations http://code.google.com/p/sympy/issues/detail?id=2297 See issue 2444 for the even/odd function assumptions. -- You received this message because you are subscribed to the Google Groups sympy-issues

Re: Issue 2444 in sympy: even function and odd function assumptions

Issue 2444: even function and odd function assumptions http://code.google.com/p/sympy/issues/detail?id=2444 This issue is now blocking issue 2297. See http://code.google.com/p/sympy/issues/detail?id=2297 -- You received this message because you are listed in the owner or CC fields of this

Re: Issue 352 in sympy: should Symbol(x) be real or complex by default?

Updates: Status: Fixed Comment #35 on issue 352 by asmeurer: should Symbol(x) be real or complex by default? http://code.google.com/p/sympy/issues/detail?id=352 I'd say this was resolved, and has been for some time. Symbols have been complex for default for as long as I've been

Issue 2445 in sympy: Function to automatically generate timing plots

Status: Accepted Owner: asmeurer Labels: Type-Enhancement Priority-Medium New issue 2445 by asmeurer: Function to automatically generate timing plots http://code.google.com/p/sympy/issues/detail?id=2445 See https://groups.google.com/d/msg/sympy/W4LbzPiehXU/H5qgB_RI_OwJ. Quote: It would be

Re: Issue 2443 in sympy: Result of subs() is incorrect after unpickling

Comment #1 on issue 2443 by asmeurer: Result of subs() is incorrect after unpickling http://code.google.com/p/sympy/issues/detail?id=2443 I get Aaron-Meurer:sympy aaronmeurer(master$%=)$python unpickleBug.py 0.00120006086051012 Aaron-Meurer:sympy aaronmeurer(master$%=)$python unpickleBug.py

Re: Issue 2443 in sympy: Result of subs() is incorrect after unpickling

Comment #2 on issue 2443 by matt...@gmail.com: Result of subs() is incorrect after unpickling http://code.google.com/p/sympy/issues/detail?id=2443 Which version of SymPy do you use? The development version of SymPy gives: ~/repo/git/sympy $ python unpickleBug.py 0.00120006086051012

Re: Issue 2443 in sympy: Result of subs() is incorrect after unpickling

Updates: Status: Fixed Labels: WrongResult Comment #3 on issue 2443 by asmeurer: Result of subs() is incorrect after unpickling http://code.google.com/p/sympy/issues/detail?id=2443 OK, so I see that this behaves as you describe in SymPy 0.6.7. I bisected it down to this

Re: Issue 2442 in sympy: Why does Lambda use Dummys?

Comment #1 on issue 2442 by ronan.l...@gmail.com: Why does Lambda use Dummys? http://code.google.com/p/sympy/issues/detail?id=2442 Lambda(x, x) is Lambda(y, y) is S.IdentityFunction, so there is no way it can remember the original symbol name. But Lambda(y, 2*y) does remember it, which

Re: Issue 2443 in sympy: Result of subs() is incorrect after unpickling

Comment #4 on issue 2443 by adampaet...@gmail.com: Result of subs() is incorrect after unpickling http://code.google.com/p/sympy/issues/detail?id=2443 Here is massively simplified expression that exhibits the same problem. Attachments: stringA.py 88 bytes -- You received this

Re: Issue 2443 in sympy: Result of subs() is incorrect after unpickling

Comment #5 on issue 2443 by adampaet...@gmail.com: Result of subs() is incorrect after unpickling http://code.google.com/p/sympy/issues/detail?id=2443 Yes, I am using 0.6.7. I will update to the latest dev branch (I should have thought to do this anyway). Thanks. -- You received this

Re: Issue 1047 in sympy: Suggested new assumption system

Comment #53 on issue 1047 by asmeurer: Suggested new assumption system http://code.google.com/p/sympy/issues/detail?id=1047 For what I said in comment 51, see issue 1887. -- You received this message because you are subscribed to the Google Groups sympy-issues group. To post to this group,

Re: Issue 1799 in sympy: Replace exp(x) with E**x internally

Comment #14 on issue 1799 by asmeurer: Replace exp(x) with E**x internally http://code.google.com/p/sympy/issues/detail?id=1799 That was pushed into master (see 2402). -- You received this message because you are subscribed to the Google Groups sympy-issues group. To post to this group, send

Re: Issue 2442 in sympy: Why does Lambda use Dummys?

Comment #2 on issue 2442 by asmeurer: Why does Lambda use Dummys? http://code.google.com/p/sympy/issues/detail?id=2442 I see. Maybe we should print S.IdentityFunction completely differently. -- You received this message because you are subscribed to the Google Groups sympy-issues group. To

Re: Issue 2443 in sympy: Result of subs() is incorrect after unpickling

Comment #6 on issue 2443 by asmeurer: Result of subs() is incorrect after unpickling http://code.google.com/p/sympy/issues/detail?id=2443 Considering that this was brought out by pickling and unpicking an object, which should leave it unchanged, I wonder if that commit just masked some

Re: Issue 2442 in sympy: Why does Lambda use Dummys?

Comment #3 on issue 2442 by asmeurer: Why does Lambda use Dummys? http://code.google.com/p/sympy/issues/detail?id=2442 How about making Id == S.IdentityFunction and printing it as Id? Printing it as Lambda is bad anyway, since it isn't a Lambda. -- You received this message because you are

Re: Issue 2442 in sympy: Why does Lambda use Dummys?

Comment #4 on issue 2442 by ronan.l...@gmail.com: Why does Lambda use Dummys? http://code.google.com/p/sympy/issues/detail?id=2442 It is indeed a Lambda (in the isinstance sense), but 'Id' would certainly make sense. -- You received this message because you are subscribed to the Google