Keywords

#functional_equation

Functional equation

Equation whose unknown is a function

In mathematics, a functional equation is, in the broadest meaning, an equation in which one or several functions appear as unknowns. So, differential equations and integral equations are functional equations. However, a more restricted meaning is often used, where a functional equation is an equation that relates several values of the same function. For example, the logarithm functions are essentially characterized by the logarithmic functional equation

Mon 19th

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Functional equation Cauchy's functional equation Equation Functional equation (L-function) Functional differential equation Riemann zeta function Functional (mathematics) List of equations Euler–Lagrange equation Dirichlet L-function
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