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The picture is of my granddaughter. I'm very proud of her. She's sweet, bright and fearless. I am a psychiatrist. I'm very interested in the symbols that we use to facilitate thinking. Funforms is a new math symbol system that I believe does exactly that. Funforms [ff] is a place order binary tally mark system. I intend to publish some ebooks about ff.
on March 27, 2011 :
So Interesting...a wonderful form of "new" math
(reviewed 22 days after purchase)