Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #74699

Re: NaN comparisons - Call For Anecdotes

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.fsmpi.rwth-aachen.de!newsfeed1.swip.net!uio.no!news.tele.dk!news.tele.dk!small.news.tele.dk!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <ian.g.kelly@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.051
X-Spam-Evidence '*H*': 0.90; '*S*': 0.00; 'definitions': 0.07; 'differing': 0.09; '"should"': 0.16; 'defined,': 0.16; 'holy': 0.16; 'mathematics.': 0.16; 'url:shtml': 0.16; 'wrote:': 0.18; 'thu,': 0.19; 'url:edu': 0.26; 'defined': 0.27; 'header:In-Reply- To:1': 0.27; 'message-id:@mail.gmail.com': 0.30; 'url:wiki': 0.31; 'usually': 0.31; 'though.': 0.31; 'url:wikipedia': 0.31; 'lists': 0.32; 'could': 0.34; 'but': 0.35; 'received:google.com': 0.35; 'url:org': 0.36; 'being': 0.38; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'subject:': 0.39; 'to:addr:python.org': 0.39; 'ian': 0.60; 'opinions': 0.70; 'jul': 0.74; 'subject:For': 0.78; 'keeper': 0.84
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=LyY1FsQGGxsUqEssDGE7TpbIX5wOK/osbwiPkKu0l7M=; b=eD8wRTYCDpLJrg5GVeWmDeBeQJv3gMaVwXWDfP4mOWtI/JzkgzsF3nlPGX3s2nevtj qBFdvHC1+zJ6gnKuPY9fdHZNa8xwc2/iKwzctpffMKRpfe/dPx/UyGUiGMZVk5Xcfqsf qR626I4Feiog8IcNlwz4q7q6mKGuiBQtPg6gJ3fFh9356+4SlOu/8v5LalLD8Tjf3U35 FyQfWK3EqSAzqrf1lb4hOVOHmuHx1OW/JLS0IVMtPazxtYuG1xbk2WaKSPKBFf2yMWGb 8Dfet87IwdpW2bDXz7AwnKMjdkEZ3CiaQC/KS3qbi338NdYo/wP3nn5+MCsXHybhrr5s 0gLg==
X-Received by 10.70.35.43 with SMTP id e11mr554470pdj.10.1405638086121; Thu, 17 Jul 2014 16:01:26 -0700 (PDT)
MIME-Version 1.0
In-Reply-To <87tx6fzob1.fsf@elektro.pacujo.net>
References <53BC05FB.4050707@jmunch.dk> <53BD70F4.4000504@stoneleaf.us> <53BDAF90.8010709@jmunch.dk> <CAPM-O+yiioLm-UiV2fYqc2n9qZrN+_v6RkeqJ7mOQ3Kq+cH0CQ@mail.gmail.com> <mailman.11716.1404946997.18130.python-list@python.org> <osx38e010kj.fsf@gmail.com> <mailman.11929.1405611387.18130.python-list@python.org> <osxwqbbzuqc.fsf@gmail.com> <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>
From Ian Kelly <ian.g.kelly@gmail.com>
Date Thu, 17 Jul 2014 17:00:44 -0600
Subject Re: NaN comparisons - Call For Anecdotes
To Python <python-list@python.org>
Content-Type text/plain; charset=UTF-8
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.15
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list/>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.11968.1405638089.18130.python-list@python.org> (permalink)
Lines 17
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1405638089 news.xs4all.nl 2837 [2001:888:2000:d::a6]:37798
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:74699

Show key headers only | View raw


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.

Back to comp.lang.python | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

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

csiph-web