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  2. Frobenius matrix - Wikipedia

    en.wikipedia.org/wiki/Frobenius_matrix

    A Frobenius matrix is a special kind of square matrix from numerical analysis. A matrix is a Frobenius matrix if it has the following three properties: all entries on the main diagonal are ones; the entries below the main diagonal of at most one column are arbitrary; every other entry is zero; The following matrix is an example.

  3. Matrix norm - Wikipedia

    en.wikipedia.org/wiki/Matrix_norm

    The Frobenius norm is an extension of the Euclidean norm to and comes from the Frobenius inner product on the space of all matrices. The Frobenius norm is sub-multiplicative and is very useful for numerical linear algebra. The sub-multiplicativity of Frobenius norm can be proved using Cauchy–Schwarz inequality.

  4. Frobenius inner product - Wikipedia

    en.wikipedia.org/wiki/Frobenius_inner_product

    In mathematics, the Frobenius inner product is a binary operation that takes two matrices and returns a scalar.It is often denoted , .The operation is a component-wise inner product of two matrices as though they are vectors, and satisfies the axioms for an inner product.

  5. Inner product space - Wikipedia

    en.wikipedia.org/wiki/Inner_product_space

    Geometric interpretation of the angle between two ... The inner product for complex square matrices of the same size is the Frobenius ... Minkowski distance ...

  6. Dot product - Wikipedia

    en.wikipedia.org/wiki/Dot_product

    The angle between two complex vectors is then given by ... Squared Euclidean distance). ... A double-dot product for matrices is the Frobenius inner product, ...

  7. Orthogonal Procrustes problem - Wikipedia

    en.wikipedia.org/wiki/Orthogonal_Procrustes_problem

    where ‖ ‖ denotes the Frobenius norm. This is a special case of Wahba's problem (with identical weights; instead of considering two matrices, in Wahba's problem the columns of the matrices are considered as individual vectors). Another difference is that Wahba's problem tries to find a proper rotation matrix instead of just an orthogonal one.

  8. Quaternion - Wikipedia

    en.wikipedia.org/wiki/Quaternion

    According to the Frobenius ... This norm makes it possible to define the distance d(p, q) between p and q as the ... as block diagonal matrices with two 2 × 2 ...

  9. List of named matrices - Wikipedia

    en.wikipedia.org/wiki/List_of_named_matrices

    A matrix of scores which express the similarity between two data points: Sequence alignment: Sylvester matrix: A square matrix whose entries come from the coefficients of two polynomials: The Sylvester matrix is nonsingular if and only if the two polynomials are coprime to each other Symplectic matrix: The real matrix of a symplectic transformation