Abstract:In this paper, we prove the Kolmogorov inequality for M È -norms generated by concave functions (with the same constants as in the Kolmogorov inequality).
“…Therefore the progress here is slower and at the moment there are many topical unsolved problems. We refer to the papers [3][4][5][6][21][22][23][24][25].…”
Section: Introduction and Statement Of Resultsmentioning
We consider a triple of N-functions (M, H, J ) that satisfy the -condition, μ = |x| α dx and suppose that an additive variant of interpolation inequality holds, R is an arbitrary set invariant with respect to external and internal dilations. We show that the above inequality implies its certain nonlinear variant involving the expressions R n H(|u|) μ(dx) and R n J (|∇ (2) u|) μ(dx). Various generalizations of this inequality to the more general class of N-functions, measures and to higher order derivatives are also discussed and the examples are presented.
“…Therefore the progress here is slower and at the moment there are many topical unsolved problems. We refer to the papers [3][4][5][6][21][22][23][24][25].…”
Section: Introduction and Statement Of Resultsmentioning
We consider a triple of N-functions (M, H, J ) that satisfy the -condition, μ = |x| α dx and suppose that an additive variant of interpolation inequality holds, R is an arbitrary set invariant with respect to external and internal dilations. We show that the above inequality implies its certain nonlinear variant involving the expressions R n H(|u|) μ(dx) and R n J (|∇ (2) u|) μ(dx). Various generalizations of this inequality to the more general class of N-functions, measures and to higher order derivatives are also discussed and the examples are presented.
“…Although there is already a large body of literature about Sobolev inequalities in Orlicz spaces (see for example [8,15] and their references), to the best of our knowledge the interpolation inequalities between derivatives in Orlicz-Sobolev spaces are hardly discussed in the literature. We can refer the reader to recent papers by Bang [2], Bang and Giao [3], Bang and Le [4] and Bang and Thu [5], where the authors obtain Landau-Kolmogorov inequalities within a fixed Orlicz space.…”
A version of interpolation inequalities for derivatives in logarithmic Orlicz spaces is obtained where the first gradient of u is estimated in terms of u and its second gradient. One of the Orlicz functions considered is supposed to be λp. The motivation, examples and applications are discussed.
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