From: Gerry Myerson <gerry@mpce.mq.edu.au>
Subject: Re: What are modular forms?
Date: Tue, 14 Mar 2000 17:02:05 +1100
Newsgroups: sci.math
Summary: [missing]

In article <09d1abf8.ed871649@usw-ex0104-028.remarq.com>, viner2012 
<viner2012NOviSPAM@netzero.net.invalid> wrote:

> Another curiosity question. Can't find anywhere on Internet, so
> please take the time to answer the question or refer me to
> relevant link.

I haven't seen any answers posted, so I'll give it a whirl: 

A modular form is a function f of a complex variable z satisfying 
a functional equation of the form 

  f(z) = (cz + d)^k f( (az + b)/(cz + d) ) 

for all integers a, b, c, d such that ad - bc =1. 

Gerry Myerson (gerry@mpce.mq.edu.au)