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Schreiber, Heinrich GrammateusSchreiber, Heinrich (Grammateus), b. Erfurt (Germany), around 1490, d. Vienna,1525. Mathematician. Pupil of G. Collimitius, studied in Vienna and Kraków, taught at the University of Vienna 1517-1521. Influential mathematician, wrote mathematics text books in German; contributions to the symbolism of arithmetic and algebra (the first to consistently use plus and minus signs) and an instruction book for accountants. Works: Algorismus proportionum, 1514; Ayn new künstlich Buch, 1521; Algorismus de integris, 1523. Literature: M. Cantor, Vorlesungen über Geschichte der Mathematik, 4 vols., 1880-1898 (vol. 2); NDB.
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