Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 1889 by chr.schu...@gmx.de: sympify gives an error when a
symbol 'C' is used together with a local dictionary
http://code.google.com/p/sympy/issues/detail?id=1889
Hi,
I keep on getting errors when I try to sympify 'C*2' us
Comment #63 on issue 966 by smichr: Can't simplify exp(2 * pi * I * a) when
a is integer
http://code.google.com/p/sympy/issues/detail?id=966
I had forgotten that this was even in the queue for review. I wish I had
kept it as
part of my 1766 branch. Now I can't apply it to that branch with o
Comment #1 on issue 1889 by smichr: sympify gives an error when a
symbol 'C' is used together with a local dictionary
http://code.google.com/p/sympy/issues/detail?id=1889
The single letters in "COSINEQ" are classes in sympy. Although I would have
expected
your defining of vars['C'] to have
Updates:
Status: Started
Owner: mattpap
Labels: NeedsReview
Comment #5 on issue 1376 by mattpap: sympy.sum overrides built-in sum with
a different call syntax
http://code.google.com/p/sympy/issues/detail?id=1376
As I work with built-in sum() a lot when developing sympy
Comment #16 on issue 51 by mattpap: RootOf for polynomial equations
http://code.google.com/p/sympy/issues/detail?id=51
I removed RootsOf and improved RootSum (polys8), e.g.:
In [1]: RootSum((x - 7)*(x**2 - 2)**2*(x**3 + x + 3)**5, Lambda(x, abs(x)))
Out[1]:
⎛ 3 ⎞
Comment #2 on issue 1881 by mattpap: solve -> OverflowError: mpz too large
for int
http://code.google.com/p/sympy/issues/detail?id=1881
This is all interesting, as I can't reproduce the OverflowError.
On my 1.7 GHz Centrino laptop factorization of numerator of 'f' takes less
than 3s
with g
Comment #2 on issue 1889 by asmeurer: sympify gives an error when a
symbol 'C' is used together with a local dictionary
http://code.google.com/p/sympy/issues/detail?id=1889
You can override it the normal way:
In [6]: C = Symbol('C')
In [8]: C*2
Out[8]: 2⋅C
Should we fix this to return a Sy
Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 1890 by bslade...@razdva.cz: Quartic equation solution probably
not correct
http://code.google.com/p/sympy/issues/detail?id=1890
This equation:
x = Symbol('x', positive=True)
jdU = Symbol('jdU', positive=True)
EQN2 = 1 +
Comment #17 on issue 51 by asmeurer: RootOf for polynomial equations
http://code.google.com/p/sympy/issues/detail?id=51
So what is the replacement of RootsOf?
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Comment #18 on issue 51 by mattpap: RootOf for polynomial equations
http://code.google.com/p/sympy/issues/detail?id=51
thx, but too bad, doesn't solve my problem, yet.
See my comment in issue 1881. The problem you showed here is similar
(although not
exactly the same) to problem in that is
Comment #19 on issue 51 by mattpap: RootOf for polynomial equations
http://code.google.com/p/sympy/issues/detail?id=51
So what is the replacement of RootsOf?
For now [ RootOf(f, i) for i in xrange(0, degree(f)) ]. Later I will add
RootOf
support to roots(), but for this I need to improve Ro
Comment #1 on issue 1887 by asmeurer: Relational should subclass Boolean,
not Expr
http://code.google.com/p/sympy/issues/detail?id=1887
I guess it should be a Boolean in order to do things like x > y => Assume(x
- y, Q.positive).
Also, I think just about all Expr methods on a relational s
Comment #3 on issue 1881 by notmyadd...@teewars.org: solve ->
OverflowError: mpz too large for int
http://code.google.com/p/sympy/issues/detail?id=1881
print K0 shows: QQ
print f shows:
[mpq(-216010546875L)], [], [], [], [], [], [], [], []]],
[[[]]], [[[]]],
[[[]]], [[[]]], [[[
Comment #20 on issue 51 by notmyadd...@teewars.org: RootOf for polynomial
equations
http://code.google.com/p/sympy/issues/detail?id=51
thx, but too bad, doesn't solve my problem, yet.
See my comment in issue 1881. The problem you showed here is similar
(although not
exactly the same) to
Comment #6 on issue 1376 by ronan.l...@gmail.com: sympy.sum overrides
built-in sum with a different call syntax
http://code.google.com/p/sympy/issues/detail?id=1376
-1. I don't think it's a good idea to glue together two functions with
different
semantics and interface. It would be much cle
Comment #64 on issue 966 by Vinzent.Steinberg: Can't simplify exp(2 * pi *
I * a) when a is integer
http://code.google.com/p/sympy/issues/detail?id=966
No problem. BTW, if you want to get 1766 review faster, it would be great
if you could
provide a stable 1766 branch, without failing tests
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