Mathematician:Jacques Salomon Hadamard

Mathematician
French mathematician who contributed in the fields of:
 * Number Theory
 * Complex Function Theory
 * Differential Geometry
 * Partial Differential Equations
 * Functional Analysis

Most famous for proving the Prime Number Theorem in 1896, independently of.

Nationality
French

History

 * Born: 8 December 1865 in Versailles, France
 * Died: 17 October 1963 in Paris, France

Theorems and Definitions

 * Prime Number Theorem
 * Cartan-Hadamard Theorem (with )
 * Cauchy-Hadamard Theorem (with )
 * Ostrowski-Hadamard Gap Theorem (with )


 * Hadamard Inequality
 * Hadamard-Rybczynski Equation (with )
 * Hadamard Factorization Theorem
 * Hadamard Finite Part Integral
 * Hadamard's Method of Descent
 * Hadamard Three-Circle Theorem


 * Hadamard's Canonical Factorization
 * Hadamard Configuration
 * Hadamard's Dynamical System
 * Hadamard Manifold
 * Hadamard Matrix
 * Hadamard Product
 * Hadamard Space
 * Hadamard Transform


 * The Hadamard-de la Vallée-Poussin Constant (with ), also known as:
 * The Meissel-Mertens Constant, for and
 * Kronecker's Constant, for
 * the Prime Reciprocal Constant


 * Boggio-Hadamard Conjecture (with )

Publications

 * 1923: Lectures on Cauchy's Problem in Linear Partial Differential Equations
 * 1945: The Psychology of Invention in the Mathematical Field
 * 1945: The Psychology of Invention in the Mathematical Field