Logarithm of a matrix

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Logarithm of a matrix. 1 connected concept: Von Neumann entropy (related to).

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Community · Von Neumann entropy

Summary

In mathematics, a logarithm of a matrix is another matrix such that the matrix exponential of the latter matrix equals the original matrix.

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computational requirement for entropy
Calculating von Neumann entropy requires computing the matrix logarithm of the density matrix, which is typically done via spectral decomposition.
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