Discrete quadratic functionals and symplectic difference systems

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Authors	DOŠLÝ Ondřej
Year of publication	2004
Type	Article in Periodical
Magazine / Source	Funct. Differ. Equ.
MU Faculty or unit	Faculty of Science
Citation
Field	General mathematics
Keywords	Discrete quadratic functional; kernel condition; nonnegativity; Picone's identity
Description	The survey of recent results on positivity and nonnegativity of discrete quadratic functionals corresponding to symplectic difference systems are presented and a new condition for nonegativity of these functionals is established.
Related projects:	Qualitative theory of solutions of difference equations Functional-differential equations and mathematical-statistical models