With Burmann, he names an Inversion theorem that gives the Taylor series of the inverse of a given function, and he also proved that every positive integer can be written as the sum of four square numbers.
With Burmann, he names an Inversion theorem that gives the Taylor series of the inverse of a given function, and he also proved that every positive integer can be written as the sum of four square numbers. His solution to the isoperimetric problem lead to the creation of the calculus of variations, and along with Euler lends his name to the central equation of that field. He also showed that the order of a subgroup divides the order of that group in one of his namesake theorems, and his solutions to a special case of the three body problem are known as his "points". FTP, who is this French mathematician, also the namesake of some multipliers useful in multivariable optimization problems?
With Burmann, he names an Inversion theorem that gives the Taylor series of the inverse of a given function, and he also proved that every positive integer can be written as the sum of four square numbers.
Joseph Louis {Lagrange}