|
Hadamard may refer to: * Jacques Hadamard (1865–1963), a French mathematician, whose name is associated with the following topics in mathematics: ; Differential geometry : * Hadamard space, a geodesically complete metric space of non-positive curvature * Cartan-Hadamard theorem, a result on the topology of non-positively curved manifolds ; Differential equations and dynamical systems : * Hadamard's method of descent, a method of solving partial differential equations by reducing dimensions * Hadamard parametrix construction, a method of solving second order partial differential equations * Hadamard's dynamical system, a type of chaotic dynamical system ; Complex analysis and convexity : * Hadamard three-lines theorem: a bound on the maximum modulus complex analytic functions defined on a strip in the complex plane; * Hadamard three-circle theorem, a bound on the maximum modulus of complex analytic functions defined on an annulus in the complex plane; closely related to the three-lines theorem; * Hadamard factorization theorem, a specific factorization of an entire function of finite order, involving its zeros and the exponential of a polynomial * Ostrowski–Hadamard gap theorem, a result on the analytic continuation of lacunary power series * Hermite–Hadamard inequality, bounding the integral of convex functions. ; Transform calculus : * Hadamard transform, an example of a generalized class of Fourier transforms * Fast Walsh–Hadamard transform, an efficient algorithm to compute the Hadamard transform ; Theory of matrices : * Hadamard matrix, a square matrix whose entries are either +1 or −1 and whose rows are mutually orthogonal * Hadamard code, a system used for signal error detection and correction based on Hadamard matrices * Hadamard's inequality, a bound on the determinants of matrices. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hadamard (disambiguation)」の詳細全文を読む スポンサード リンク
|