Folding Circles
Free e-Book Proof of Pi (the search for) This book looks for a mathematical proof for the true value of Pi. www.proofpi.com
Free e-Book Pi versus Pi (A comparison) In this book i compare two different versions for the value of Pi, 3.141 v 3.144. www.proofpi.com
A search for a mathematical proof of pi. www.proofpi.com