http://code.google.com/p/sympy/issues/
Aaron Meurer On Wed, Apr 25, 2012 at 8:08 PM, Kjetil brinchmann Halvorsen <[email protected]> wrote: > I can open issues, if you can tell me where to do so (or where to read about > opening issues?) > > Kjetil > > > On Wed, Apr 25, 2012 at 21:02, Aaron Meurer <[email protected]> wrote: >> >> Can you open issues for all of these, so that we don't forget about them? >> >> Aaron Meurer >> >> On Wed, Apr 25, 2012 at 6:08 PM, Kjetil brinchmann Halvorsen >> <[email protected]> wrote: >> > And here is one example that leads to an internal error: >> > >> > In [50]: summation( (-1)**k * binomial(2*n,k)**2, (k,0,oo)) >> > >> > --------------------------------------------------------------------------- >> > NameError Traceback (most recent call >> > last) >> > /home/kjetil/py/sympy/sympy/sympy/<ipython-input-50-ba135c6f6f06> in >> > <module>() >> > ----> 1 summation( (-1)**k * binomial(2*n,k)**2, (k,0,oo)) >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/concrete/summations.pyc in >> > summation(f, *symbols, **kwargs) >> > 307 >> > 308 """ >> > --> 309 return Sum(f, *symbols, **kwargs).doit(deep=False) >> > 310 >> > 311 def telescopic_direct(L, R, n, limits): >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/concrete/summations.pyc in >> > doit(self, **hints) >> > 139 a, b = b, a >> > 140 >> > --> 141 f = eval_sum(f, (i, a, b)) >> > 142 if f is None: >> > 143 return self >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/concrete/summations.pyc in >> > eval_sum(f, limits) >> > 389 # this can save time when b-a is big. >> > >> > 390 # We should try to transform to partial fractions >> > >> > --> 391 value = eval_sum_symbolic(f.expand(), (i, a, b)) >> > 392 if value is not None: >> > 393 return value >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/concrete/summations.pyc in >> > eval_sum_symbolic(f, limits) >> > 475 return r >> > 476 >> > --> 477 return eval_sum_hyper(f, (i, a, b)) >> > 478 >> > 479 def _eval_sum_hyper(f, i, a): >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/concrete/summations.pyc in >> > eval_sum_hyper(f, (i, a, b)) >> > 558 >> > 559 # Now b == oo, a != -oo >> > >> > --> 560 res = _eval_sum_hyper(f, i, a) >> > 561 if res is not None: >> > 562 return Piecewise(res, (Sum(f, (i, a, b)), True)) >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/concrete/summations.pyc in >> > _eval_sum_hyper(f, i, a) >> > 523 h = hyper(ap, bq, x) >> > 524 >> > --> 525 return f.subs(i, 0)*hyperexpand(h), h.convergence_statement >> > 526 >> > 527 def eval_sum_hyper(f, (i, a, b)): >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/simplify/hyperexpand.pyc in >> > hyperexpand(f, allow_hyper, rewrite) >> > 2445 if not r.has(nan, zoo, oo, -oo): >> > 2446 return r >> > -> 2447 return f.replace(hyper, do_replace).replace(meijerg, >> > do_meijer) >> > 2448 >> > 2449 from sympy.polys.polytools import Poly >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/core/basic.pyc in replace(self, >> > query, value, map) >> > 1315 return None >> > 1316 >> > -> 1317 result = rec_replace(self) >> > 1318 >> > 1319 if result is None: >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/core/basic.pyc in >> > rec_replace(expr) >> > 1306 >> > 1307 if result: >> > -> 1308 value = _value(expr, result) >> > 1309 >> > 1310 if map: >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/core/basic.pyc in <lambda>(expr, >> > result) >> > 1263 _value = lambda expr, result: value(*expr.args) >> > 1264 elif callable(value): >> > -> 1265 _value = lambda expr, result: value(*expr.args) >> > 1266 else: >> > 1267 raise TypeError("given a type, replace() expects >> > another type or a callable") >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/simplify/hyperexpand.pyc in >> > do_replace(ap, bq, z) >> > 2434 >> > 2435 def do_replace(ap, bq, z): >> > -> 2436 r = _hyperexpand(IndexPair(ap, bq), z, rewrite=rewrite) >> > 2437 if r is None: >> > 2438 return hyper(ap, bq, z) >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/simplify/hyperexpand.pyc in >> > _hyperexpand(ip, z, ops0, z0, premult, prem, rewrite) >> > 1996 if unpolarify(z) in [1, -1] and (len(nip.ap), len(nip.bq)) >> > == >> > (2, 1): >> > 1997 f = build_hypergeometric_formula(nip) >> > -> 1998 r = carryout_plan(f, ops).replace(hyper, >> > hyperexpand_special) >> > 1999 if not r.has(hyper): >> > 2000 return r + p >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/core/basic.pyc in replace(self, >> > query, value, map) >> > 1315 return None >> > 1316 >> > -> 1317 result = rec_replace(self) >> > 1318 >> > 1319 if result is None: >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/core/basic.pyc in >> > rec_replace(expr) >> > 1306 >> > 1307 if result: >> > -> 1308 value = _value(expr, result) >> > 1309 >> > 1310 if map: >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/core/basic.pyc in <lambda>(expr, >> > result) >> > 1263 _value = lambda expr, result: value(*expr.args) >> > 1264 elif callable(value): >> > -> 1265 _value = lambda expr, result: value(*expr.args) >> > 1266 else: >> > 1267 raise TypeError("given a type, replace() expects >> > another type or a callable") >> > >> > /home/kjetil/py/sympy/sympy/sympy/sympy/simplify/hyperexpand.pyc in >> > hyperexpand_special(ap, bq, z) >> > 1911 if b.is_integer and b < 0: >> > 1912 return 2*cos(pi*b/2)*gamma(-b)*gamma(b - a + 1) >> > \ >> > -> 1913 /gamma(-b/2)/gamma(b/2 - a + 1) >> > 1914 else: >> > 1915 return gamma(b/2 + 1)*gamma(b - a + 1) \ >> > >> > NameError: global name 'pi' is not defined >> > >> > Kjetil >> > >> > >> > -- >> > "If you want a picture of the future - imagine a boot stamping on the >> > human >> > face - forever." >> > >> > George Orwell (1984) >> > >> > >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups >> > "sympy" group. >> > To post to this group, send email to [email protected]. >> > To unsubscribe from this group, send email to >> > [email protected]. >> > For more options, visit this group at >> > http://groups.google.com/group/sympy?hl=en. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/sympy?hl=en. >> > > > > -- > "If you want a picture of the future - imagine a boot stamping on the human > face - forever." > > George Orwell (1984) > > > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/sympy?hl=en. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
