On a variant of the matrix transformation method for approximate solution of partial differential equations of second degree
A. Szustalewicz (1971)
Applicationes Mathematicae
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Displaying similar documents to “Matrix transformation method of approximate solution of partial differential equations”
On a variant of the matrix transformation method for approximate solution of partial differential equations of second degree
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A copositive matrix A is said to be exceptional if it is not the sum of a positive semidefinite matrix and a nonnegative matrix. We show that with certain assumptions on A−1, especially on the diagonal entries, we can guarantee that a copositive matrix A is exceptional. We also show that the only 5-by-5 exceptional matrix with a hollow nonnegative inverse is the Horn matrix (up to positive diagonal congruence and permutation similarity).
Abel-type weighted means transformations into .
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