Re: Looking for an example
- To: mathgroup at smc.vnet.net
- Subject: [mg89822] Re: Looking for an example
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Sat, 21 Jun 2008 05:32:37 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <email@example.com>
> I tried posting this once but I think I screwed it up, sorry if this a
It is not clear, at least to me, whether you use Mathematica. Since this
newsgroup is dedicated to Mathematica, software made and published by
Wolfram Research, Inc., I shall assume that you are using it and show
you an example written in Mathematica.
> I'm looking for an example of an equation which has multiple possible
> integers for the domain, but only one possible integer for the range.
Here, I believe you are talking about a *surjective* function from a
subset of Z to another subset of Z.
> I want the domain to be a set of numbers that increase by a set
> increment ( like 2,3,4,5 or 2, 4,6,8 ) and I want don't want the range
> to be 0 or 1.
Assuming I have correctly understood all your requirements, the
following function should fit your needs.
In:= f[x_Integer] = Mod[x, 2, 1];
f /@ Range[2, 8, 2] // Union
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