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Groups > comp.soft-sys.math.mathematica > #3623

Re: Bug 1+4/10

From "Oleksandr Rasputinov" <oleksandr_rasputinov@hmamail.com>
Newsgroups comp.soft-sys.math.mathematica
Subject Re: Bug 1+4/10
Date 2011-07-09 11:41 +0000
Organization Steven M. Christensen and Associates, Inc and MathTensor, Inc.
Message-ID <iv9epg$df2$1@smc.vnet.net> (permalink)
References <iv1acv$sk7$1@smc.vnet.net> <iv456e$eop$1@smc.vnet.net>

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On Fri, 08 Jul 2011 09:52:54 +0100, slawek <human@site.pl> wrote:

> U=BFytkownik "Oleksandr Rasputinov"  napisa=B3 w wiadomo=B6ci grup
> dyskusyjnych:iv456e$eop$1@smc.vnet.net...
>
>> Proper treatment of inexact numbers requires at least some care and
>
> There is no "inexact numbers". There are only inexact computations and=
/or
> measurements.
>
> 3.14 is an approximation of pi, but it is exactly 3+1/10+4/100
>

In this context, "inexact number" means a distribution, the exact number 
being the expectation value of this distribution. In the case of  
finite-precision inexact numbers we have uniform distributions over finite  
fields; the true expectation values are then the means, whose values are
however not necessarily exactly representable in such fields. I trust that  
you understand these concepts, so let us not enter into a futile debate 
over nomenclature or epistemology.

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Thread

Bug  1+4/10 "slawek" <slawek@host.pl> - 2011-07-06 09:37 +0000
  Re: Bug  1+4/10 Peter Breitfeld <phbrf@t-online.de> - 2011-07-06 11:06 +0000
    Re: Bug  1+4/10 "slawek" <slawek@host.pl> - 2011-07-07 11:41 +0000
  Re: Bug  1+4/10 "Oleksandr Rasputinov" <oleksandr_rasputinov@hmamail.com> - 2011-07-07 11:27 +0000
    Re: Bug  1+4/10 "slawek" <human@site.pl> - 2011-07-08 08:52 +0000
    Re: Bug  1+4/10 "Oleksandr Rasputinov" <oleksandr_rasputinov@hmamail.com> - 2011-07-09 11:41 +0000
  Re: Bug 1+4/10 Daniel Lichtblau <danl@wolfram.com> - 2011-07-07 11:35 +0000

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