If on the one hand, this measure was thought as a response to workers ' alienation, on the other hand, the Popular Front gave Léo Lagrange ( SFIO ) responsibility for organisation of the use this leisure time, and of all aspects concerning sports.

) During 1808-1810, Lagrange gave the method of variation of parameters its final form in a series of papers.

Lagrange gave a proof in 1775 that was based on his study of quadratic forms.

Lagrange gave a proof in 1770 based on his general theory of integral quadratic forms.

It was over 750 years later that Lagrange gave the first known proof to the statement in 1771.

In classical field theory, one writes down a Lagrangian density,, involving a field, φ ( x, t ), and possibly its first derivatives (∂ φ /∂ t and ∇ φ ), and then applies a field-theoretic form of the Euler – Lagrange equation.

A post office was established on January 9, 1867, with Bryant S. Lagrange as the first postmaster.

The first decisions of these goals focused Lannes: Attack partly Spanish right flank ( Tudela ), recognize and deepen the center ( mountains to the shore of Queiles Urzante ), for which he left in reserve divisions and Granjean Morlot, and third: throw the mass of his cavalry against Cascante to prevent General Lapeña Tudela corriese to their lines and to allow time to reach the Division Lagrange thought to face the Andalusians.

Although generalized to triple integrals by Lagrange in 1773, and used by Legendre, Laplace, Gauss, and first generalized to n variables by Mikhail Ostrogradski in 1836, it resisted a fully rigorous formal proof for a surprisingly long time, and was first satisfactorily resolved 125 years later, by Élie Cartan in a series of papers beginning in the mid-1890s (; ).

Fermat, Euler, Lagrange, Legendre, and other number theorists of the 17th and 18th centuries proved some theorems and made some conjectures about quadratic residues, but the first systematic treatment is § IV of Gauss's Disquisitiones Arithmeticae ( 1801 ).

Although named after Joseph Louis Lagrange, it was first discovered in 1779 by Edward Waring and rediscovered in 1783 by Leonhard Euler.

* Lagrange discusses representations of integers by general algebraic forms ; produces a tract on elimination theory ; publishes his first paper on the general process for solving an algebraic equation of any degree via Lagrange resolvents ; and proves Bachet's theorem that every positive integer is the sum of four squares.

He is most famous as the inventor of tensor calculus, although the advent of tensor calculus in dynamics goes back to Lagrange, who originated the general treatment of a dynamical system, and to Riemann, who was the first to think geometry in an arbitrary number of dimensions.

although in another early appearance of this formula in a publication in 1874 by Helmholtz ,, Helmholtz states this formula was first derived by Joseph Louis Lagrange who had died 61 years prior.

* the first Lagrange Point in an astronomical Solar System

Lagrange first used the method in 1766.

Pierre Laplace ( in 1773 ) and Joseph Louis Lagrange ( in 1776 ) had already studied the problem, both of them showing that the major axes of the orbits are stable, by using a first degree approximation of the perturbing forces.

Poisson addressed the question of the stability of the planetary orbits, which had already been settled by Lagrange to the first degree of approximation from the perturbation forces, and derived the equation ( named Poisson's equation after him ):

The first state highway in Boston was the part of Washington Street from Dedham to West Roxbury Parkway ( at Lagrange Street ).

Since the proof of the Lagrange inversion formula is a very short computation, it is worth reporting it here.

As a result of surface area minimization, a surface will assume the smoothest shape it can ( mathematical proof that " smooth " shapes minimize surface area relies on use of the Euler – Lagrange equation ).

This innovative work by Lagrange was a precursor to Galois theory, and its failure to develop solutions for equations of fifth and higher degrees hinted that such solutions might be impossible, but it did not provide conclusive proof.

If he did know this result it would be truly remarkable for even Fermat, who stated the result, failed to provide a proof of it and it was not settled until Joseph Louis Lagrange proved it using results due to Leonhard Euler.

Ruffini developed Joseph Louis Lagrange's work on permutation theory, following 29 years after Lagrange ’ s " Réflexions sur la théorie algébrique des equations " ( 1770 – 1771 ) which was largely ignored until Ruffini who established strong connections between permutations and the solvability of algebraic equations.

He had read extensively in Leibniz, Joseph Louis Lagrange, Thomas Simpson, and Lacroix and was seriously disappointed in the mathematical instruction available at Cambridge.

French Dominicans founded and administer the École Biblique et Archéologique française de Jérusalem founded in 1890 by Père Marie-Joseph Lagrange O. P.

At 15, he was reading the original papers of Joseph Louis Lagrange, such as the landmark Réflexions sur la résolution algébrique des équations which likely motivated his later work on equation theory, and Leçons sur le calcul des fonctions, work intended for professional mathematicians, yet his classwork remained uninspired, and his teachers accused him of affecting ambition and originality in a negative way.

They associated with their work the chemist Louis-Bernard Guyton de Morveau, the mathematician and astronomer Joseph-Louis Lagrange, the astronomer Joseph Jérôme Lefrançois de Lalande, the mathematician Gaspard Monge, the astronomer and naval geographer Alexandre Guy Pingré, and the poet, actor and playwright Fabre d ' Églantine, who invented the names of the months, with the help of André Thouin, gardener at the Jardin des Plantes of the Muséum National d ' Histoire Naturelle in Paris.

In the distant future, Mankind has colonized space ( with clusters of space colonies at each of the five Earth-Moon Lagrange points ), and, down on the Earth, the nations have united as the United Earth Sphere Alliance.

Paths have been calculated which link the Lagrange points of the various planets into the so-called Interplanetary Transport Network.

* 1736 – Joseph-Louis Lagrange, Italian-born mathematician ( d. 1813 )

* Lambda denotes a Lagrange multiplier in multi-dimensional calculus.

The Lagrange points mark positions where the combined gravitational pull of the two large masses provides precisely the centripetal force required to orbit with them.

Some notable mathematicians include Archimedes of Syracuse, Leonhard Euler, Carl Gauss, Johann Bernoulli, Jacob Bernoulli, Aryabhata, Brahmagupta, Bhaskara II, Nilakantha Somayaji, Omar Khayyám, Muhammad ibn Mūsā al-Khwārizmī, Bernhard Riemann, Gottfried Leibniz, Andrey Kolmogorov, Euclid of Alexandria, Jules Henri Poincaré, Srinivasa Ramanujan, Alexander Grothendieck, David Hilbert, Alan Turing, von Neumann, Kurt Gödel, Joseph-Louis Lagrange, Georg Cantor, William Rowan Hamilton, Carl Jacobi, Évariste Galois, Nikolay Lobachevsky, Rene Descartes, Joseph Fourier, Pierre-Simon Laplace, Alonzo Church, Nikolay Bogolyubov and Pierre de Fermat.

Many great mathematicians of the past were preoccupied by numerical analysis, as is obvious from the names of important algorithms like Newton's method, Lagrange interpolation polynomial, Gaussian elimination, or Euler's method.

Lagrange proved that for any natural number n that is not a perfect square there are x and y > 0 that satisfy Pell's equation.

The general theory of Pell's equation, based on continued fractions and algebraic manipulations with numbers of the form was developed by Lagrange in 1766 – 1769.

This algebra is quotiented over by the ideal generated by the Euler – Lagrange equations.

Despite initial opposition from her parents and difficulties presented by a sexist society, she gained education from books in her father's library and from correspondence with famous mathematicians such as Lagrange, Legendre, and Gauss.

" Germain obtained the lecture notes and began sending her work to Joseph Louis Lagrange, a faculty member.

" When Lagrange saw the intelligence of M. LeBlanc, he requested a meeting, and thus Sophie was forced to disclose her true identity.

Fortunately, Lagrange did not mind that Germain was a woman, and he became her mentor.

Germain also proved or nearly proved several results that were attributed to Lagrange or were rediscovered years later.

In 1772, Italian-born mathematician Joseph-Louis Lagrange, in studying the restricted three-body problem, predicted that a small body sharing an orbit with a planet but lying 60 ° ahead or behind it will be trapped near these points.

These leading and trailing points are called the and Lagrange points.

However, no asteroids trapped in Lagrange points were observed until more than a century after Lagrange's hypothesis.