Hermitian function

In mathematical analysis, a Hermitian function is a complex function with the property that its complex conjugate is equal to the original function with the variable changed in sign:

(where the ${\displaystyle ^{*}}$ indicates the complex conjugate) for all ${\displaystyle x}$ in the domain of ${\displaystyle f}$.

This definition extends also to functions of two or more variables, e.g., in the case that ${\displaystyle f}$ is a function of two variables it is Hermitian if

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