Trace (linear algebra)

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Trace (linear algebra). 1 connected concept: Von Neumann entropy (related to).

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Community · Von Neumann entropy

Summary

In linear algebra, the trace of a square matrix A, denoted tr(A), is defined as a sum of the elements on its main diagonal, .

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mathematical foundation for calculation
The von Neumann entropy is defined using the trace of the density matrix, specifically as S = -Tr(ρ ln ρ).
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