By M.M. Cohen

Cohen M.M. A path in simple-homotopy conception (Springer, [1973)(ISBN 3540900551)

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183). J. Graph theory 1736–1936. Oxford: Oxford University Press, 1976. E. Amusements in mathematics. London, Nelson: 1917. B. Knots and surfaces: a guide to discovering mathematics. Providence: American Mathematical Society, 1991. See chapter 1. Mr. Simplex saves the Aspidistra. Film. Washington, DC: Mathematical Association of America, 1965. ) Newman, J. The world of mathematics. New York: Simon and Schuster, 1956. Steinhaus, H. Mathematical snapshots. New York: Oxford University Press, 1950.

I suppose he thinks that because every square is a rectangle, then every rectangle must also be a square? (Phone rings. Millie answers it. Boss walks in. ) MILLIE: (Hangs up and turns to Boss) Boss, I just talked with a lady on the phone. She said something about inspecting doors. She had faxed us these floor plans. Scene 4 39 BOSS: We don’t do doors! We do maps! MILLIE: Well, I told her that. But she heard about our work with tours and thought we could help her. BOSS: Huh? What do doors have to do with tours?

Include goals, statements of problems, terminology, results, and arguments. Make sure it's well organized and convincing because Joe likes map coloring and wants to continue working on it. He has got to paint them so you can tell them apart the minute you look at them, hain't he? Of course. Well, then, do you want him to go and paint both of them brown? Certainly you don't. He paints one of them blue, and then you can't make no mistake. It's just the same with maps. '' –from Tom Sawyer Abroad, Mark Twain The problem of coloring maps goes back to October 23, 1852, when Francis Guthrie (then a graduate student at the University of London) posed it to his teacher Augustus de Morgan (of de Morgan's Law fame), who in turn wrote to the Irish mathematician William Rowan Hamilton: 24 Chapter 1 Acme Does Maps and Considers Coloring Them “A student of mine asked me today to give him a reason for a fact which I did not know was a fact, and do not yet.