1. Orthogonal matrixIn linear algebra, an orthogonal matrix is a square matrix with real entries whose columns and rows are orthogonal unit vectors. Equivalently, a matrix Q is orthogonal if its transpose is equal to its inverse: which entails where I is the identity matrix. An orthogonal matrix Q is necessarily invertible (with inverse {{{1}}}), unitary ({{{1}}}), and normal ({{{1}}}).
Read “Orthogonal matrix” on English Wikipedia
Read “直交行列” on Japanese Wikipedia
Read “Orthogonal matrix” on DBpedia
Read “Orthogonal matrix” on English Wikipedia
Read “直交行列” on Japanese Wikipedia
Read “Orthogonal matrix” on DBpedia
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