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Re: NaN comparisons - Call For Anecdotes

References (8 earlier) <mailman.11950.1405623342.18130.python-list@python.org> <877g3b244v.fsf@elektro.pacujo.net> <mailman.11962.1405629625.18130.python-list@python.org> <87tx6fzob1.fsf@elektro.pacujo.net> <CALwzidmYHNt3WTqo5+OhkMGWOG72qOQnCx8cRXOod8Ycx=O8Pw@mail.gmail.com>
From Ian Kelly <ian.g.kelly@gmail.com>
Date 2014-07-17 17:07 -0600
Subject Re: NaN comparisons - Call For Anecdotes
Newsgroups comp.lang.python
Message-ID <mailman.11969.1405638500.18130.python-list@python.org> (permalink)

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On Thu, Jul 17, 2014 at 5:00 PM, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> 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.

Incidentally, as noted in the Wikipedia article you left out some
options -- it's not just between 0 or 1. It's also possible to derive
a limit of positive infinity or any nonnegative real.

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Re: NaN comparisons - Call For Anecdotes "Anders J. Munch" <2014@jmunch.dk> - 2014-07-10 01:03 +0200
  Re: NaN comparisons - Call For Anecdotes Johann Hibschman <jhibschman@gmail.com> - 2014-07-17 11:12 -0400
    Re: NaN comparisons - Call For Anecdotes Chris Angelico <rosuav@gmail.com> - 2014-07-18 01:36 +1000
      Re: NaN comparisons - Call For Anecdotes Johann Hibschman <jhibschman@gmail.com> - 2014-07-17 14:49 -0400
        Re: NaN comparisons - Call For Anecdotes Chris Angelico <rosuav@gmail.com> - 2014-07-18 04:55 +1000
          Re: NaN comparisons - Call For Anecdotes Marko Rauhamaa <marko@pacujo.net> - 2014-07-17 22:10 +0300
            Re: NaN comparisons - Call For Anecdotes Ian Kelly <ian.g.kelly@gmail.com> - 2014-07-17 14:39 -0600
              Re: NaN comparisons - Call For Anecdotes Marko Rauhamaa <marko@pacujo.net> - 2014-07-18 00:08 +0300
                Re: NaN comparisons - Call For Anecdotes Ian Kelly <ian.g.kelly@gmail.com> - 2014-07-17 17:00 -0600
                Re: NaN comparisons - Call For Anecdotes Ian Kelly <ian.g.kelly@gmail.com> - 2014-07-17 17:07 -0600
        Re: NaN comparisons - Call For Anecdotes Chris Angelico <rosuav@gmail.com> - 2014-07-18 04:59 +1000
      Re: NaN comparisons - Call For Anecdotes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-07-18 17:57 +0000
        Re: NaN comparisons - Call For Anecdotes Chris Angelico <rosuav@gmail.com> - 2014-07-19 05:49 +1000

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