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  2. Transpose - Wikipedia

    en.wikipedia.org/wiki/Transpose

    For example, with a matrix stored in row-major order, the rows of the matrix are contiguous in memory and the columns are discontiguous. If repeated operations need to be performed on the columns, for example in a fast Fourier transform algorithm, transposing the matrix in memory (to make the columns contiguous) may improve performance by ...

  3. Transposition - Wikipedia

    en.wikipedia.org/wiki/Transposition

    Transposition (mathematics), a permutation which exchanges two elements and keeps all others fixed; Transposition, producing the transpose of a matrix A T, which is computed by swapping columns for rows in the matrix A; Transpose of a linear map; Transposition (logic), a rule of replacement in philosophical logic

  4. Contraposition - Wikipedia

    en.wikipedia.org/wiki/Contraposition

    In logic and mathematics, contraposition, or transposition, refers to the inference of going from a conditional statement into its logically equivalent contrapositive, and an associated proof method known as § Proof by contrapositive. The contrapositive of a statement has its antecedent and consequent inverted and flipped.

  5. Transpositions matrix - Wikipedia

    en.wikipedia.org/wiki/Transpositions_matrix

    In example if , and , are two arbitrary selected elements from the same column q of matrix, then, matrix consists one fours of elements (,,,,,), for which are satisfied the equations , =, and , =,. This property, named “Tr-property” is specific to T r {\displaystyle Tr} matrices.

  6. Conjugate transpose - Wikipedia

    en.wikipedia.org/wiki/Conjugate_transpose

    In mathematics, the conjugate transpose, also known as the Hermitian transpose, of an complex matrix is an matrix obtained by transposing and applying complex conjugation to each entry (the complex conjugate of + being , for real numbers and ).

  7. Symmetric group - Wikipedia

    en.wikipedia.org/wiki/Symmetric_group

    A transposition is a permutation which exchanges two elements and keeps all others fixed; for example (1 3) is a transposition. Every permutation can be written as a product of transpositions; for instance, the permutation g from above can be written as g = (1 2)(2 5)(3 4).

  8. Hermitian matrix - Wikipedia

    en.wikipedia.org/wiki/Hermitian_matrix

    In mathematics, a Hermitian matrix (or self-adjoint matrix) is a complex square matrix that is equal to its own conjugate transpose—that is, the element in the i-th row and j-th column is equal to the complex conjugate of the element in the j-th row and i-th column, for all indices i and j: = ¯

  9. Transpose of a linear map - Wikipedia

    en.wikipedia.org/wiki/Transpose_of_a_linear_map

    The assignment produces an injective linear map between the space of linear operators from to and the space of linear operators from # to #. If = then the space of linear maps is an algebra under composition of maps, and the assignment is then an antihomomorphism of algebras, meaning that () =.

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