On Wed, 10 Nov 2021, 09:56 Dima Pasechnik, <[email protected]> wrote:

> On Tue, Nov 9, 2021 at 8:13 PM [email protected]
> <[email protected]> wrote:
> >
> > Ah, I meant RBF(erfi(1/sqrt(2)).
> >
> > I hadn't noticed I was running cocalc on Sagemath 9.2 rather than
> Sagemath 9.4. Switching to Sagemath 9.4 fixes the issue with
> RBF(stieltjes(1)).
> >
> > Now, however, I get a different error for RBF(erfi(1/sqrt(2)). See below.
> > I get the same errors as before for RBF(gamma(3/2,1)) and
> RIF(gamma(3/2,1)).
> one needs to wrap
> arb_hypgeom_gamma_upper(), see
>
> https://arblib.org/arb_hypgeom.html?highlight=incomplete#incomplete-gamma-and-beta-functions
> to get RBF(gamma(3/2,1)) to work
>
> I've opened https://trac.sagemath.org/ticket/32851 to deal with this.
> Probably RBF(erfi()) should be treated there too.
>

needs review now (after an initial confusion on my side)


>
> >
> > Harald
> > PS. Here is the output for RBF(erfi(1/sqrt(2))):
> >
> > RecursionError Traceback (most recent call last)
> <ipython-input-2-dee2477a9f8d> in <module> ----> 1
> RBF(erfi(Integer(1)/sqrt(Integer(2))))
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/parent.pyx
> in sage.structure.parent.Parent.__call__
> (build/cythonized/sage/structure/parent.c:9338)() 896 if mor is not None:
> 897 if no_extra_args: --> 898 return mor._call_(x) 899 else: 900 return
> mor._call_with_args(x, args, kwds)
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/coerce_maps.pyx
> in sage.structure.coerce_maps.NamedConvertMap._call_
> (build/cythonized/sage/structure/coerce_maps.c:6042)() 285 raise
> TypeError("Cannot coerce {} to {}".format(x, C)) 286 cdef Map m --> 287
> cdef Element e = method(C) 288 if e is None: 289 raise RuntimeError("BUG in
> coercion model: {} method of {} returned None".format(self.method_name,
> type(x)))
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/symbolic/expression.pyx
> in sage.symbolic.expression.Expression._arb_
> (build/cythonized/sage/symbolic/expression.cpp:11830)() 1647 pass 1648
> else: -> 1649 return R(res) 1650 # Typically more informative and
> consistent than the exceptions that 1651 # would propagate
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/parent.pyx
> in sage.structure.parent.Parent.__call__
> (build/cythonized/sage/structure/parent.c:9338)() 896 if mor is not None:
> 897 if no_extra_args: --> 898 return mor._call_(x) 899 else: 900 return
> mor._call_with_args(x, args, kwds)
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/coerce_maps.pyx
> in sage.structure.coerce_maps.NamedConvertMap._call_
> (build/cythonized/sage/structure/coerce_maps.c:6042)() 285 raise
> TypeError("Cannot coerce {} to {}".format(x, C)) 286 cdef Map m --> 287
> cdef Element e = method(C) 288 if e is None: 289 raise RuntimeError("BUG in
> coercion model: {} method of {} returned None".format(self.method_name,
> type(x)))
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/symbolic/expression.pyx
> in sage.symbolic.expression.Expression._arb_
> (build/cythonized/sage/symbolic/expression.cpp:11830)() 1647 pass 1648
> else: -> 1649 return R(res) 1650 # Typically more informative and
> consistent than the exceptions that 1651 # would propagate
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/parent.pyx
> in sage.structure.parent.Parent.__call__
> (build/cythonized/sage/structure/parent.c:9338)() 896 if mor is not None:
> 897 if no_extra_args: --> 898 return mor._call_(x) 899 else: 900 return
> mor._call_with_args(x, args, kwds)
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/coerce_maps.pyx
> in sage.structure.coerce_maps.NamedConvertMap._call_
> (build/cythonized/sage/structure/coerce_maps.c:6042)() 285 raise
> TypeError("Cannot coerce {} to {}".format(x, C)) 286 cdef Map m --> 287
> cdef Element e = method(C) 288 if e is None: 289 raise RuntimeError("BUG in
> coercion model: {} method of {} returned None".format(self.method_name,
> type(x)))
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/symbolic/expression.pyx
> in sage.symbolic.expression.Expression._arb_
> (build/cythonized/sage/symbolic/expression.cpp:11830)() 1647 pass 1648
> else: -> 1649 return R(res) 1650 # Typically more informative and
> consistent than the exceptions that 1651 # would propagate
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/parent.pyx
> in sage.structure.parent.Parent.__call__
> (build/cythonized/sage/structure/parent.c:9338)() 896 if mor is not None:
> 897 if no_extra_args: --> 898 return mor._call_(x) 899 else: 900 return
> mor._call_with_args(x, args, kwds)
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/coerce_maps.pyx
> in sage.structure.coerce_maps.NamedConvertMap._call_
> (build/cythonized/sage/structure/coerce_maps.c:6042)() 285 raise
> TypeError("Cannot coerce {} to {}".format(x, C)) 286 cdef Map m --> 287
> cdef Element e = method(C) 288 if e is None: 289 raise RuntimeError("BUG in
> coercion model: {} method of {} returned None".format(self.method_name,
> type(x)))
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/symbolic/expression.pyx
> in sage.symbolic.expression.Expression._arb_
> (build/cythonized/sage/symbolic/expression.cpp:11830)() 1647 pass 1648
> else: -> 1649 return R(res) 1650 # Typically more informative and
> consistent than the exceptions that 1651 # would propagate
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/parent.pyx
> in sage.structure.parent.Parent.__call__
> (build/cythonized/sage/structure/parent.c:9338)() 896 if mor is not None:
> 897 if no_extra_args: --> 898 return mor._call_(x) 899 else: 900 return
> mor._call_with_args(x, args, kwds)
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/structure/coerce_maps.pyx
> in sage.structure.coerce_maps.NamedConvertMap._call_
> (build/cythonized/sage/structure/coerce_maps.c:6042)() 285 raise
> TypeError("Cannot coerce {} to {}".format(x, C)) 286 cdef Map m --> 287
> cdef Element e = method(C) 288 if e is None: 289 raise RuntimeError("BUG in
> coercion model: {} method of {} returned None".format(self.method_name,
> type(x))) ... last 14 frames repeated, from the frame below ...
> /ext/sage/9.4/local/lib/python3.9/site-packages/sage/symbolic/expression.pyx
> in sage.symbolic.expression.Expression._arb_
> (build/cythonized/sage/symbolic/expression.cpp:11830)() 1647 pass 1648
> else: -> 1649 return R(res) 1650 # Typically more informative and
> consistent than the exceptions that 1651 # would propagate RecursionError:
> maximum recursion depth exceeded while calling a Python object
> >
> > Le mardi 9 novembre 2021 à 20:41:10 UTC+1, [email protected] a écrit :
> >>
> >> It does seem to work for me on sage-9.4 on cocalc, so can you provide
> >> a complete log of what you're doing, etc.?
> >>
> >> ~$ sage
> >> ┌────────────────────────────────────────────────────────────────────┐
> >> │ SageMath version 9.4, Release Date: 2021-08-22 │
> >> │ Using Python 3.9.5. Type "help()" for help. │
> >> └────────────────────────────────────────────────────────────────────┘
> >> sage: RBF(stieltjes(1))
> >> [-0.07281584548367673 +/- 2.30e-18]
> >> sage: RBF(1/sqrt(2))
> >> [0.707106781186547 +/- 7.95e-16]
> >> sage:
> >> Exiting Sage (CPU time 0m0.24s, Wall time 0m39.76s).
> >> ~$ uname -a
> >> Linux project-2cc650fd-1b95-467b-b748-75b421914dae 5.11.0-1020-gcp
> >> #22~20.04.1-Ubuntu SMP Tue Sep 21 10:54:26 UTC 2021 x86_64 x86_64
> >> x86_64 GNU/Linux
> >>
> >>
> >> On Tue, Nov 9, 2021 at 11:34 AM [email protected]
> >> <[email protected]> wrote:
> >> >
> >> > PS. I have the same issue with RBF(1/sqrt(2)).
> >> >
> >> > Le mardi 9 novembre 2021 à 20:31:33 UTC+1, [email protected] a
> écrit :
> >> >>
> >> >> Hi,
> >> >>
> >> >> RBF(stieltjes(1)) no longer works. It now gives the error message
> >> >>
> >> >> TypeError: unable to convert stieltjes(1) to a RealBall
> >> >>
> >> >> I realize that this means it most likely wasn't working right before
> (the code must have worked because Sage fell back on SymbolicRing ->
> RealField -> RBF, which shouldn't happen). I also realize that I could type
> RBF(RIF(stieltjes(1)), but that's a stopgap measure that shouldn't be
> necessary, since stieltjes(1) is in fact implemented in ARB.
> >> >>
> >> >> version: Sagemath 9.3 on an Intel Mac Mini (Mac OS Monterrey)
> >> >> or Sagemath 9.4 on cocalc.
> >> >>
> >> >> Best
> >> >> Harald
> >> >
> >> > --
> >> > You received this message because you are subscribed to the Google
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> send an email to [email protected].
> >> > To view this discussion on the web visit
> https://groups.google.com/d/msgid/sage-devel/0500174a-66ab-4491-aad1-6727af69cbbbn%40googlegroups.com
> .
> >>
> >>
> >>
> >> --
> >> William (http://wstein.org)
> >
> > --
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