...热门的对称性 Sizzling Symmetry 二阶导数的对称性 symmetry of second derivatives ; Clairaut's formula ; Clairaut's parameter ; Equality of mixed partials 基本粒子的对称性 symmetry of elementary particl...
abstract:In mathematics, the symmetry of second derivatives (also called the equality of mixed partials) refers to the possibility of interchanging the order of taking partial derivatives of a function