نتایج جستجو برای: β compactness

تعداد نتایج: 185331  

Journal: :Fractal and fractional 2022

In this paper, we investigate the existence and multiplicity of solutions for a class quasi-linear problems involving fractional differential equations in χ-fractional space Hκ(x)γ,β;χ(Δ). Using Genus Theory, Concentration-Compactness Principle, Mountain Pass Theorem, show that under certain suitable assumptions considered problem has at least k pairs non-trivial solutions.

2006
Luo Luo Sei-ichiro Ueki D. Khavinson

In this paper, we study the weighted composition operators Wφ,ψ :f → ψ(f ◦ φ) between weighted Bergman spaces and Hardy spaces on the unit ball of Cn. We characterize the boundedness and the compactness of the weighted composition operators Wφ,ψ :Ap(να)→Aq(νβ) (0 < q < p <∞, −1 < α,β <∞) and Wφ,ψ :Hp(B)→Hq(B) (0 < q < p <∞). © 2006 Elsevier Inc. All rights reserved.

Journal: :journal of ornamental plants 2015
s. javahery h. zarei s. a. r. movahedi naeini g. roshani m. eftekhari

under favorable soil conditions such as existence of easily destructible organic compounds, balanced heat and moisture, adequate ventilation and abundant nutrients, organic materials are mineralized. once mineralizing occurs, mineral elements like p, s, ca, mg, k and other cations are released. a related study was conducted to determine the effect of seven organic fertilizers (leaf mold (lm), r...

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1973

2017
Yeonhwa Song Jin-Sun Kim Eun Kyung Choi Joon Kim Kang Mo Kim Haeng Ran Seo

Hepatocellular carcinoma (HCC) is resistant to conventional chemotherapeutic agents and remains an unmet medical need. Here, we demonstrate a mechanism of cell adhesion-mediated drug resistance using a variety of HCC spheroid models to overcome environment-mediated drug resistance in HCC. We classified spheroids into two groups, tightly compacted and loosely compacted aggregates, based on inves...

2006
HAIM BREZIS LOUIS NIRENBERG

A new and simpler proof is given of the result of P. Rabinowitz for nontrivial time periodic solutions of a vibrating string equation utt-ux, + g(u) = 0 and Dirichlet boundary conditions on a finite interval. We assume essentially that g is nondecreasing, and g(u)/u+m as Iu(+w. The proof uses a modified form (PS), of the Palais-Smale condition (PS). Let g : R-+R be a continuous nondecreasing fu...

2005
Yuxiang Li Youde Wang

Let f be a positive smooth function on a close Riemann surface (M,g). The f − energy of a map u from M to a Riemannian manifold (N, h) is defined as E f (u) = M f |∇u| 2 dV g. In this paper, we will study the blow-up properties of Palais-Smale sequences for E f. We will show that, if a Palais-Smale sequence is not compact, then it must blows up at some critical points of f. As a sequence, if an...

Journal: :Topology and its Applications 2002

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