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Download André-Louis Cholesky: Mathematician, Topographer and Army by Claude Brezinski, Dominique Tournès PDF

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By Claude Brezinski, Dominique Tournès

This publication lines the lifetime of Cholesky (1875-1918), and provides his kin historical past. After an advent to topography, an English translation of an unpublished paper by means of him the place he defined his strategy for linear structures is given, studied and changed in its ancient context. His different works, together with books, also are defined in addition to his involvement in instructing at an outstanding tuition by means of correspondence. the tale of this college and its founder, Léon Eyrolles, are addressed. Then, an incredible unpublished booklet of Cholesky on graphical calculation is analyzed intimately and in comparison to related modern courses. The biography of Ernest Benoit, who wrote the 1st paper the place Cholesky´s procedure is defined, is equipped. numerous records, highlighting the existence and the character of Cholesky, finish the book.

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Extra info for André-Louis Cholesky: Mathematician, Topographer and Army Officer

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It was necessary to identify some points with the greatest possible precision, as happened in sieges. The expression plan directeur (directing plan or fire plan) comes from the fact that it was used to point the firing batteries. It was necessary to improve the preparation of firing by using more accurate maps where the relief was represented. It was also necessary to include the positions of the enemy. Cholesky took part in this work. The Groupes de Canevas de Tir (Groups of firing grids) were created in late 1914 by G´en´eral Bourgeois [31].

These four sisters, the daughters of Anne Agathe Cholesky, lived together in a building which now belongs to Mr. Largeteau, a notary, in the center of Montguyon. This is why its facade bears the inscription Aux quatre sœurs which could still be seen, at some hours of the day, by standing at the right place in the street. They were running a haberdashery.

This line passed through Lassigny, Rib´ecourt–Dreslincourt and Tracy–le–Mont. The details of the offensive were decided by G´en´eral Mangin: The line marked by the following points: Pontoise, Cuts, Bl´erancourt, Mont–de–Grocq, V´ezaponin, Tartiers, Cuizy–en–Almont, should be considered as an indication of minimum target. It is especially important to act in the best circumstances of the fighting for progressing as fast and as far as possible, so as to finally achieve: 18th Corps, the Oise river and the confluence with the Ailette river; 7th Corps, the Ailette river; 30th Corps, the line Cr´ecy, Juvigny; 1st Corps, the northern edge of the ravine of Juvigny.

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