Copositive and Positive Quadratic Forms on Matrices
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DOI: 10.1007/s00025-019-1079-7
Abstract: A real symmetric quadratic form \(f = f(Z_1,\ldots ,Z_n)\) in the n non-commuting indeterminates \(Z_1,\ldots ,Z_n\) is said to be d-positive (respectively, d-copositive) if for all real symmetric (respectively, positive semidefinite) \((d \times d)\)-matrices \(A_1,\ldots… read more here.
Keywords: quadratic forms; copositive positive; positive quadratic; forms matrices ... See more keywords
On Regularity of Positive Quadratic Doubly Stochastic Operators
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DOI: 10.1134/s0001434618010376
Abstract: Author Information Reprint Address: Saburov, M (reprint author) Int Islamic Univ Malaysia, Kuantan, Malaysia. Organization-Enhanced Name(s) International Islamic University Malaysia Reprint Address: Saburov, M (reprint author) Amer Univ Middle East, Coll Engn & Technol, Egaila,… read more here.
Keywords: positive quadratic; doubly stochastic; malaysia; quadratic doubly ... See more keywords