In mathematics, a hollow matrix may refer to one of several related classes of matrix: a sparse matrix; a matrix with a large block of zeroes; or a matrix with diagonal entries all zero. == Definitions == === Sparse === A hollow matrix may be one with "few" non-zero entries: that is, a sparse matrix.
In mathematics, a hollow matrix may refer to one of several related classes of matrix: a sparse matrix; a matrix with a large block of zeroes; or a matrix with diagonal entries all zero. == Definitions == === Sparse === A hollow matrix may be one with "few" non-zero entries: that is, a sparse matrix.
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