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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Thu, 17 Jul 2014 17:00:44 -0600
Subject: Re: NaN comparisons - Call For Anecdotes
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On Thu, Jul 17, 2014 at 3:08 PM, Marko Rauhamaa <marko@pacujo.net> wrote:
> Ian Kelly <ian.g.kelly@gmail.com>:
>
>> Well, 0**0 is usually defined as 1, despite the limits being
>> ambiguous.
>
> <URL: https://www.math.hmc.edu/funfacts/ffiles/10005.3-5.shtml>
>
>     But if it could be defined, what "should" it be? 0 or 1?

I did say "usually". There's not one single Holy Keeper of the
Definitions for mathematics. Wikipedia lists some differing opinions
on the subject:

http://en.wikipedia.org/wiki/Exponentiation#Zero_to_the_power_of_zero

I note that mathworld.wolfram.com also lists it as undefined, though.