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An inequality in Orlicz function spaces with Orlicz norm

Jin Cai Wang — 2003

Commentationes Mathematicae Universitatis Carolinae

We use Simonenko quantitative indices of an 𝒩 -function Φ to estimate two parameters q Φ and Q Φ in Orlicz function spaces L Φ [ 0 , ) with Orlicz norm, and get the following inequality: B Φ B Φ - 1 q Φ Q Φ A Φ A φ - 1 , where A Φ and B Φ are Simonenko indices. A similar inequality is obtained in L Φ [ 0 , 1 ] with Orlicz norm.

Weighted composition operators from Zygmund spaces to Bloch spaces on the unit ball

Yu-Xia LiangChang-Jin WangZe-Hua Zhou — 2015

Annales Polonici Mathematici

Let H() denote the space of all holomorphic functions on the unit ball ⊂ ℂⁿ. Let φ be a holomorphic self-map of and u∈ H(). The weighted composition operator u C φ on H() is defined by u C φ f ( z ) = u ( z ) f ( φ ( z ) ) . We investigate the boundedness and compactness of u C φ induced by u and φ acting from Zygmund spaces to Bloch (or little Bloch) spaces in the unit ball.

Practical Ulam-Hyers-Rassias stability for nonlinear equations

Jin Rong WangMichal Fečkan — 2017

Mathematica Bohemica

In this paper, we offer a new stability concept, practical Ulam-Hyers-Rassias stability, for nonlinear equations in Banach spaces, which consists in a restriction of Ulam-Hyers-Rassias stability to bounded subsets. We derive some interesting sufficient conditions on practical Ulam-Hyers-Rassias stability from a nonlinear functional analysis point of view. Our method is based on solving nonlinear equations via homotopy method together with Bihari inequality result. Then we consider nonlinear equations...

Generalized Boundary Value Problems for Nonlinear Fractional Langevin Equations

Xuezhu LiMilan MedveďJin Rong Wang — 2014

Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica

In this paper, generalized boundary value problems for nonlinear fractional Langevin equations is studied. Some new existence results of solutions in the balls with different radius are obtained when the nonlinear term satisfies nonlinear Lipschitz and linear growth conditions. Finally, two examples are given to illustrate the results.

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