What is_number means?
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Paul Royik
Jun 6, 2021, 1:11:05 AM6/6/21
to sympy
Why S.Infinity.is_number (as well as S.ComplexInfinity.is_number) is True and S.NaN.is_number is True, while sin(S.Infinity) (i.e. AccumBounds) is False?
I just can't understand what is_number means in SymPy.
Aaron Meurer
Jun 6, 2021, 2:38:58 AM6/6/21
to sympy
It's supposed to mean that it can be evaluated to a numerical value
with evalf(). I guess infinities are also considered numerical in this
sense.
Aaron Meurer
On Sat, Jun 5, 2021 at 11:11 PM Paul Royik <distan...@gmail.com> wrote:
>
> Why S.Infinity.is_number (as well as S.ComplexInfinity.is_number) is True and S.NaN.is_number is True, while sin(S.Infinity) (i.e. AccumBounds) is False?
>
> I just can't understand what is_number means in SymPy.
>
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with evalf(). I guess infinities are also considered numerical in this
sense.
Aaron Meurer
On Sat, Jun 5, 2021 at 11:11 PM Paul Royik <distan...@gmail.com> wrote:
>
> Why S.Infinity.is_number (as well as S.ComplexInfinity.is_number) is True and S.NaN.is_number is True, while sin(S.Infinity) (i.e. AccumBounds) is False?
>
> I just can't understand what is_number means in SymPy.
>
> You received this message because you are subscribed to the Google Groups "sympy" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to sympy+un...@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/4e1bf570-a80d-40b8-a658-30a1c3045bacn%40googlegroups.com.
Paul Royik
Jun 6, 2021, 6:51:05 AM6/6/21
to sympy
Thank you, Aaron.
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