Hi Bruno Marchal
Numbers are not in spacetime, that is, are not at location r at time t.
So they are ideas, they are not physical. To be physical you
have to have a specific location at a specific time. This is not
my view, it is that of Descartes.

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The same with arithmetic. Numbers and arithmetic statements are not at (r,t).
Which is not to say that they are not real, if by real I mean true
or as is without an observer. Like in a textbook.
Roger Clough, rclo...@verizon.net
9/24/2012
"Forever is a long time, especially near the end." -Woody Allen
----- Receiving the following content -----
From: Bruno Marchal
Receiver: everything-list
Time: 2012-09-23, 03:42:03
Subject: Re: Prime Numbers
On 22 Sep 2012, at 22:10, Stephen P. King wrote:
> On 9/22/2012 7:32 AM, Roger Clough wrote:
>> How could mathematics be fiction ?
>> If so, then we could simply say that 2+2=5 because it's saturday.
> How could we have a world we many minds can, on rare occasions, come
> to complete agreement if that where the case? Perhaps it is true
> that 2+2=4 because we all agree, at some level, that it is true. (I
> am not just considering humans here with the word "we"!)
How will you define "we" without accepting "2+2=4", given that IF we
assume comp, "we" are defined by (L?ian) universal number and their
relations with other universal numbers?
Why do you keep an idealist conception of numbers, which contradicts
your references to papers which use, as most texts in science, the
independence and primitivity of elementary arithmetic?
Or you remark was ironic?
Bruno
http://iridia.ulb.ac.be/~marchal/
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