Re: inconsistent refinement behavior
- To: mathgroup at smc.vnet.net
- Subject: [mg131370] Re: inconsistent refinement behavior
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Sun, 14 Jul 2013 01:48:06 -0400 (EDT)
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On 7/12/13 at 2:49 AM, akrasnov at cory.eecs.berkeley.edu (Alex Krasnov)
wrote:
>Firstly, x==0 also implicitly assumes that x is in Reals, since 0 is
>in Reals, as the following examples demonstrate:
>In: Assuming[x==0, Refine[Element[x, Reals]]] Out: True
>In: Assuming[{Element[x, Reals], x==0}, Refine[Infinity/x]]
>Out: ComplexInfinity
No so. Consider
In[1]:= Assuming[x == 0, Refine[Element[x, Complexes]]]
Out[1]= True
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