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A critical oscillation constant as a variable of time scales for half-linear dynamic equations

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    0340554 - MÚ 2010 RIV SK eng J - Journal Article
    Řehák, Pavel
    A critical oscillation constant as a variable of time scales for half-linear dynamic equations.
    Mathematica Slovaca. Roč. 60, č. 2 (2010), s. 237-256. ISSN 0139-9918. E-ISSN 1337-2211
    R&D Projects: GA AV ČR KJB100190701
    Institutional research plan: CEZ:AV0Z10190503
    Keywords : dynamic equation * time scale * half-linear equation * (non)oscillation criteria * Hille-Nehari criteria * Kneser criteria * critical constant * oscillation constant * Hardy inequality
    Subject RIV: BA - General Mathematics
    Impact factor: 0.316, year: 2010
    http://link.springer.com/article/10.2478%2Fs12175-010-0009-7

    We present criteria of Hille-Nehari type for the half-linear dynamic equation (r(t)I broken vertical bar(y (Delta)))(Delta)+p(t)I broken vertical bar(y (sigma) ) = 0 on time scales. As a particular important case we get that there is a a (sharp) critical constant which may be different from what is known from the continuous case, and its value depends on the graininess of a time scale and on the coefficient r. As applications we state criteria for strong (non)oscillation, examine generalized Euler type equations, and establish criteria of Kneser type. Examples from q-calculus, a Hardy type inequality with weights, and further possibilities for study are presented as well. Our results unify and extend many existing results from special cases, and are new even in the well-studied discrete case.
    Permanent Link: http://hdl.handle.net/11104/0183768

     
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