Definition:Signature of Hermitian Matrix
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This page is about signature of hermitian matrix. For other uses, see signature.
Definition
The signature of a Hermitian matrix $\mathbf H$ is the number of positive eigenvalues of $\mathbf H$ minus the number of negative eigenvalues of $\mathbf H$.
Also see
- Results about signatures of Hermitian matrices can be found here.
Sources
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): signature: 3. (of a Hermitian matrix)