Babbage e f (11 Ergebnisse)
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Taschenbuch. Zustand: Neu. The Phat Boy's Racy Description of the St. Lawrence River and its Environs | A guide for the tourist and traveler | E. F. Babbage | Taschenbuch | 184 S. | Englisch | 2017 | hansebooks | EAN 9783337194499 | Verantwortliche Person für die EU: Hansebooks GmbH, Trakehner Weg 52, 22844 Norderstedt, gb[at]ha…nsebooks[dot]com | Anbieter: preigu.
Note sur la machine suédoise de MM. Schutz (!) pour calculer les Tables mathématiques par la méthode des différences, et en imprimer les résultats sur des planches stéréotypes.
"BABBAGE, CHARLES. - THE DIFFERENCE MACHINE OF SCHEUTZ, MATHEMATICALLY DESCRIBED.
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In den Warenkorb(Paris, Mallet-Bachelier), 1855. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 41, No 15. Pp. (537-) 563. (Entire issue offered). Babbage's paper: pp. 557-560. Some faint, mostly marginal brownspots. First printing of this importent paper being babbage's report on the Scheutz d…iffernce calculator, explaining its functions by way of his own notations."Babbage's report on the differnce engine built by the Swedish printer Georg Scheuts (1785-1873) and his son Edvard (1821-81), based on Babbage's own designs. In 1854 the Scheutzes took their engine no. 2 to England in the hopes of marketing it. There they were introduced to Babbage, who received them with great friendliness and showed a lively interest in their work. Babbage devoted two whole days to investigating Scheutz' engine for which he had much praise, especially for the way they had succeeded in building it with the funds at their disposals. As part of his effort to promote the Scheutz Engine, Babbage gave a talk on it before the Academie des Sciences, illustrated with drawings by his son henry, in which Babbage's system of mechanical notation was used to describe the machines construction and functions. This talk was published (the paper offered) without illustrations in the Academie 'Comptes rendus'. ((Hook & Norman "Origins of Cyberspace", No. 73).
Weitere Bilder- Softcover
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In den Warenkorb(London, W.Nicol, 1826). 4to. No wrappers as extracted from "Philosophical Transactions" 1826 - Part III. Pp. 250-265 and 4 engraved plates. Some faint dampstains to plates. One plate with a small tear, no loss. the same plate some creasing at upper part, verso of plate somewhat soiled. Page 261 with some marginal brownspots and… some soiling. The other leaves clean and fine. First appearance of a main paper in the history of Computing Science in which Babbage set forth some of the basic principles that guide modern computers."Babbage's first publication of his system of mechanical notation that enabled him to describe the logic and operation of his machiness on paper as they would be fabricated in metal. Babbage later stated that: "Without the aid of this language I could not have invented the Analytical Engine" nor do I belive that any machinery of equal complexity can ever be contrived without the assistance of that or of some other equivalent language. The Difference Engine No.2.is entirely described by its aid." .Babbage considered his mechanical notation system to be one of his finest inventions, and thought it should be widely implemented. It was a source of frustartion to him, that no other machine designerr adopted it (probably because no ther engineer during Babbage's time attermpted to build machines as logically and mechanically complex as Babbage's. More than one hundred years later, in the 1930s, when development in logic were applied to switching systems in the earliest efforts to devwelop electromechanical calculators. Ckaude Shannon demonstrated that Boolean algebra could be applied to the same types of problems for which Babbage had designed his mechanical notation system."(Hook & Norman No. 37).Together with Babbage's paper comes a paper by J.F.W. Herschel "On the parallax of the fixed stars", pp. 266-280.
An Essay towards the calculus of functions. Communicated by W.H. Wollaston. Read June 15, 1815. (+) An essay towards the calculus of functions. Part II. Communicated by W.H.Wollaston. Read March 14, 1816. (2 Papers).
"BABBAGE, C. (CHARLES). - CREATING A NEW BRANCH OF MATHEMATICS.
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In den Warenkorb(London, W. Bulmer and Co., 1815 and 1816). 4to. No wrappers as extracted from "Philosophical Transactions" 1815 - Part I. and 1816 - Part II. Having both titlepages to the parts. Pp. (2),389-446 and (2),179-256. First titlepage with a stamp on verso. Otherwise fine and clean. First printings of Babbage's main mathematical contr…ibutions."Babbage's major Contribution to mathematics was his calculus of functions, which he became interested in as early as 1809 and continued to develop during his years at Cambridge. Babbage presents his major ideas on the subject in the above two papers, published in the "Philosophical Transactions" in 1815 and 1816. "It can be said with some assurance that no mathematician prior to Babbage had treated the calculus of functions in such systematic way.Babbage must be given full credit as the inventor of a distinct and importent branch of mathematics" (Dubbey 1978, 90). Elsewhere Dubby states that his new scheme would serve as a generalized calculus to include all problems capable of analytical formulation, and it is possible to see here a hint of the inspiration for his concept of THE ANALYTICAL ENGINE. While the work on the engines and his other scientific, social and political activities caused him virtually to abandon mathematical research at the age of thirty, the calculus of functions was the area he often yearned to continue. In fact the calculus of functions was not taken up by other workers, and it is the aspect of Babbage's mathematical work that modern mathematicians find most fascinating (Dubbey 1989, 18-19)." (Hook a. Norman No. 19).Charles Babbage, William Herschel and George Peacock founded in 1810 in Cambridge the "Analytical Society", at Trinity College in order to reform the notation and the teaching of mathematics in England, introducing Leibniz' differential notation instead of Newton's fluxions. The continental texts and papers then became accessible to English students.
