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...Non euclidean geometry and modern differential zhiqin lu april the fifth postulate we have learned in high school is so called named after greek mathematician euclid published elements which a mathematical treatise consisting of books alexandria ptolemaic egypt c bc s has been referred to as most successful influential textbook ever written it was one very earliest works be printed invention printing press estimated second only bible number editions since first on may about versions why isthe important presented set formal logical arguments based few basic terms axioms provided systematic method rational exploration father not because he man studied but did rigorous thoughtful march through...