גן אדם - Laws of Form

One Mathematics

The book "Laws of Form" writeen by George Spencer Brown was Published in 1969.
Bertrand Russell wrote on this book " Not since Euclid's Elements have we seen anything like it".

Laws of form :web-site by Richard Shoup Boundary Institute

Louis H Kauffman web-site for the Laws of Form

Kleinbottle1 3 papers of Diego Lucio Rapoport on the klein bottle
kleinbottle2
kleinbottle3