Positive semidefiniteness of discrete quadratic functionals

• Authors: DOŠLÝ Ondřej; BOHNER Martin; KRATZ Werner
• Year of publication: 2003
• Type: Article in Periodical
• Magazine / Source: Proc. Edinburhg Math. Soc
• MU Faculty or unit: Faculty of Science
• Web: http://uk.cambridge.org/journals/pem
• Field: General mathematics
• Keywords: Hamiltonian systems; symplectic systems; discrete quadratic functionals; nonnegativity
• Description: Necessary and sufficient condition for nonnegativity of quadratic functionals corresponding to symplectic difference systems is proved.

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