Adjoint versus classical adjoint/any relation?

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SUMMARY

The discussion clarifies the distinction between the terms "adjoint" and "adjugate" in matrix theory. The adjoint refers to the complex conjugate transpose of a matrix, while the adjugate is defined as the matrix obtained by replacing each entry with its cofactor and then transposing the resulting matrix. This differentiation is crucial to avoid confusion in mathematical contexts, particularly in linear algebra.

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arthurhenry
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is there relation between the adjoint (as in conjugate transpose) and the adjoint of a matrix(each entry replaced by the its cofactor and one takes the transpose of the resulting matrix)
Thank you
 
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Not that I know of.

Adjoint meaning each entry replaced by the its cofactor and one takes the transpose of the resulting matrix is normally now called adjugate to avoid confusion.

Adjoint meaning complex conjugate and transpose of a matrix can be hugely generalised and naturally appears anytime you have maps on a linear space.
 

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