Template Function libwalrus::hafnian

• Defined in File eigenvalue_hafnian.hpp

Function Documentation

template<typename T>
T libwalrus::hafnian(std::vector<T> &mat)

Returns the hafnian of a matrix using the algorithm described in A faster hafnian formula for complex matrices and its benchmarking on the Titan supercomputer, arxiv:1805.12498.

Return

hafnian of the input matrix

Parameters

• mat: a flattened vector of size \(n^2\), representing an \(n\times n\) row-ordered symmetric matrix.

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