EntityQ428813· pop 20· linked from 228 articlesHessenberg matrixSign in to savesquare matrix that has zero entries below the first subdiagonal or has zero entries above the first superdiagonalConnectionsblock matrixEntityeigenvectors and eigenvaluesEntityinvertible matrixEntityadjacency matrixEntityunimodular matrixEntityband matrixEntitydefinite matrixEntitystatisticsEntityInternational Standard Book NumberEntityalgorithmEntitylinear algebraEntitydigital object identifierEntitymatrixEntitygraph theoryEntitydiagonalEntitycorrelationEntityQ118398EntityCambridge University PressEntityidentity matrixEntityholomorphic functionEntityCategoriesMatrices (mathematics)