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Re: help with functional equation

Subject: Re: help with functional equation
From: Timothy Little
Date: Mon, 13 Jun 2005 23:40:51 +0000 UTC
Newsgroups: sci.math, sci.physics, sci.physics.cond-matter
kentonyee@xxxxxxxxxxx wrote:
> But what kind of dis-continuous solution is there, now that you've
> piqued my interest by bringing up the issue.

They will be discontinuous everywhere, and probably not uniquely
specifiable in a finite expression.  For example, given a basis for R
as a vector space over Q (which will have infinitely many elements),
f(x) could be the coefficient in x of one chosen basis element.  More
generally f could be any linear projection in the vector space.

However, the same reasoning as in the case f(x) = x leads to the
conclusion that V(x,y) will not depend on y.


- Tim

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