D Alamber Biography

The night from November 16 to 17 G. howled the wind, drizzled off the light rain. The young policeman, ending the bypass, suddenly heard the quiet cry of the child. On the steps of the church of St. Jean-Leron lay a small biting lump. The policeman delivered the founding to the station. The commissar immediately realized that the child was born a few hours ago and in a rich family. An expensive blanket and lace peering out from under him spoke about this.

Therefore, the commissar gave the order to his subordinate to find for the baby the nurse in the nearest village. He was the son of General Detosha and writer Tanzen. When Jean Leron was born, so he was named by the name of the church, near which he was found, his father was not in France and his mother decided to get rid of an illegitimate child. Returning to France, Detesh found his son, took him from the village and placed it in the family of the glass of Rousseau, where Jean lived most of his life.

Father often visited his son, rejoiced at his children's pranks and admired the unusual abilities of the baby.

At the age of four, Jean Leron was sent to the boarding house, and from this age he began to study diligently, striking teachers with outstanding mental abilities. At 13, he entered the Mazarini College, at the end of which he received the title of bachelor of art. At the school, Jean Leron studied Latin and Greek languages ​​and he knew that in the original he could read Archimedes, Ptolome and other authors, rhetoric, literature, physics and mathematics.

After the college, the question arose about choosing a profession. Jean’s relatives were against his passion for mathematics, and he entered the two -year Academy of Law, from which an intermediate degree between the bachelor and the doctor came out in the rank of license. So that mathematics did not distract him from these classes, Jean collected all his mathematical books and attributed him to his friend.

But Jean could no longer help but think about mathematics. From time to time, he needed one book, then the other for references, to verify the correctness of the solution found, etc. Gradually, he dragged his whole library back to the house of the Russian spouses, where he lived. At the same time, Jean studied philosophy, literature and so successful in philology that he was elected to the French Academy at 23, that is, he became one of the forty "immortal".

Madam Rousseau called her pupil a philosopher and explained that "a philosopher is such a strange person who deprives himself of everything, works like an ox from morning to evening, and all for him to talk about him after his death." He found pleasure in mathematics. And in his personal life he was unhappy. For seventeen years, he unrequitedly loved the same woman of the city of Lespinas.

When she died, a lot has lost value to him. He also abandoned the proposal of the Russian Empress Catherine II to be the teacher of her son Paul. In the last years of his life, he was engaged in the history of science and wrote biographies of many members of the Paris Academy. Before his death he was ill for a long time and painfully. It was as inconspicuous evening as at his birth.

The wind howled and drizzled light rain. He proved the existence of air tides like the ocean, substantiated the theory of indignation of the planets and explained the forecasting of the equinoxes and nuatation. Together with Denis Didro, he in the city was a grandiose work. In the years 35 volumes of the "Encyclopedia" came out. But they all express the same thought: adding to the forces acting on a material point, the forces of inertia turn the system of forces into a balanced, that is, the dynamic task comes down to static, and solving such problems is much easier.

He gave a method for solving the differential equation of the second order with private derivatives, expressing the transverse fluctuations of the string of the wave equation. This work, together with subsequent research by L. Euler and D. Bernoulli, formed the basis of mathematical physics. His name is a widely used sign of convergence of the rows.