Free online Resources:
On-Line Encyclopedia of Integer Sequences
Foundations of Mathematics
A listing of freely available online math texts
The Cornell collection of old monographs.
A free Linear Algebra book.
History of Mathmatics
The Topology Atlas

For those who still find calculating things in your head enjoyable, BEATCALC showcases a few good tricks. And, of course, Unsolved Problems!

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Last Modified: 9 May 2010 by Bradley James Wogsland .