Two Early Compositions in Algebra and Geometry Melechet Machshevet, Prague 1775. Klil HaCheshbon, Prague 1796

Two Early Compositions in Algebra and Geometry Melechet Machshevet, Prague 1775. Klil HaCheshbon, Prague 1796
* Melechet Machshevet. Great work on understanding mathematics, by Moshe Zerach Eidelitz. Prague. 1775. First edition. Rappa [5] leaf, 15 cm. Hebrew and Yiddish on parallel pages. Great work about understanding mathematics. The author wrote in the Introduction that he printed the book as pamphlets, each time a different pamphlet of 8 leaves. After he sold it he printed an additional pamphlet. Includes [5] leaves at the end: apology of the author, index, and index of errors. Like most of the copies, there is missing the two folded pages with charts. New semi leather binding. Restored title page. In good-very good condition. * Klil HaCheshbon. The foundations of mathematics, algebra and accounting, by Rabbi David Prizenhausen. Berlin. Hanoch Nearim Press, 1796. First edition. 128 leaves, [1 leaf folded chart]. 18 cm. Rules of algebra and geometry. With important approbation from Zvi Hirsch Levin, Rabbi of Berlin. Many diagrams and drawings, including symbols of possession and roots. In this volume there is an index leaf at the end, one out of three. There are copies which have been added to them an index of errors. Worn cardboard binding. In good-very good condition.