Elliptic equations and products of posit
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Charles H. Conley; Patrizia Pucci; James Serrin
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Article
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2005
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John Wiley and Sons
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English
โ 290 KB
## Abstract We present necessary and sufficient conditions under which the symmetrized product of two __n__ ร__n__ positive definite Hermitian matrices is still a positive definite matrix (Part I, Sections 2 and 3). These results are then applied to prove the validity of the strong maximum principl