adjoint

[aj-oint]
noun Mathematics.
1.
a square matrix obtained from a given square matrix and having the property that its product with the given matrix is equal to the determinant of the given matrix times the identity matrix.
2.
Also called Hermitian conjugate, transposed conjugate. the matrix obtained from a given matrix by interchanging rows and columns and by replacing each element by its complex conjugate.

Origin:
ad- + joint

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World English Dictionary
adjoint (ˈædˌdʒɔɪnt)
 
n
maths
 a.  another name for Hermitian conjugate
 b.  a generalization in category theory of this notion

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Example sentences
As a result, the operator and adjoint operator must obey the defined scalar products.
Therefore the adjoint of a unbounded operator is necessarily unbounded.
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