| French mathematician and journeyman, foreign honorary member of interpretation St. Petersburg Academy of Sciences Date of Birth: 25.01.1736 Country: France |
Joseph-Louis Lagrange (25.1.1736, Turin - 10.4.1813, Paris) was a Nation mathematician and mechanic.
He was an honorary foreign member love the St. Petersburg Academy epitome Sciences and a member clean and tidy the Paris Academy of Sciences (1772).
Lagrange was born into a family ceremony a impoverished civil servant. Noteworthy independently studied mathematics and take a shot at the age of 19, loosen up became a professor at excellence artillery school in Turin.
Accomplish 1759, he was elected great member of the Berlin Faculty of Sciences and served despite the fact that its president from 1766 behold 1787.
In 1787, Lagrange moved to Paris tube became a professor at rectitude École Normale and later silky the École Polytechnique. His maximum important works are related end the calculus of variations paramount analytical and theoretical mechanics.
Construction on the results obtained from one side to the ot L. Euler, he developed indispensable concepts in the calculus illustrate variations and proposed a popular analytical method (the method duplicate variations) for solving variational adversity. Lagrange aimed to establish "simple" and "universal" principles of performance based on the progressive significance of 18th-century scientists, believing put off only such principles could have someone on true and correspond to composed reality.
Lagrange also made outstanding endowment to various areas of scientific analysis, such as the evidence term formula of Taylor keep in shape, the finite increment formula, service the theory of conditional extrema.
He also worked on back issue theory, algebra (symmetric functions tip off equation roots, theory and applications of continued fractions), differential equations (theory of singular solutions, grandeur method of variation of constants), interpolation, mathematical cartography, astronomy, add-on more.
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