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- W2392144426 abstract "Let X N×P=(X_(1) X_(2)) be a spherically Symmetric distributed matrix, we shall prove the equivalence of the following propositions: 1. X_(1) and X_(2) are mutually independent; 2. X'_(1)X_(1) and X'_(2)X_(2) are mutually independent; 3. Vec X is distributed as N (0, V■I) for some non-negative matrix V. At last, under the ristriction P(X=0)1 we extend the classical Cochran's theorem of quadratic formt to a more general fashion." @default.
- W2392144426 created "2016-06-24" @default.
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- W2392144426 date "1987-01-01" @default.
- W2392144426 modified "2023-09-26" @default.
- W2392144426 title "QUADRATIC FORMS UNDER SPHERICAL DISTRIBUTIONS" @default.
- W2392144426 hasPublicationYear "1987" @default.
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