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Principal submatrices II: the upper and lower quadratic inequalities☆

R. C. Thompson | Robert C. Thompson | P. McEnteggert | P. McEnteggert

[1] Robert C. Thompson. Principal submatrices of normal and Hermitian matrices , 1966 .

[2] A. Horn. Doubly Stochastic Matrices and the Diagonal of a Rotation Matrix , 1954 .