(adsbygoogle = window.adsbygoogle || []).push({}); Determinat of a "continous" matrix?

a(x,y) is a matrix element ,and x,y is the row and column index.

If x,y are real numbers, how to calculate the determinat of this matrix or the inverse matrix?

An example of this kind of matrix is <k|H|k'>,a Hamiltonian in momentum representation.

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# Determinat of a continous matrix?

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