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This comprehensive reference, for mathematical, engineering and social scientists, covers matrix positivity classes and their applications.

Matrices and kernels with positivity structures, and the question of entrywise functions preserving them, have been studied throughout the 20th century, attract

This book contains both expository articles and original research in the areas of function theory and operator theory. The contributions include extended versio

This volume contains the proceedings of the Conference on Complex Analysis and Spectral Theory, in celebration of Thomas Ransford's 60th birthday, held from May

A real matrix is positive semidefinite if it can be decomposed as A = BBOC . In some applications the matrix B has to be elementwise nonnegative. If such a matr