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Dive into the research topics where Qihu Zhang is active.

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Featured researches published by Qihu Zhang.


Nonlinear Analysis-theory Methods & Applications | 2003

Existence of solutions for p(x) -Laplacian dirichlet problem

Xianling Fan; Qihu Zhang

This paper presents several sufficient conditions for the existence of solutions for the Dirichlet problem of p(x)-Laplacian {-div(|∇u|p(x)-2∇u) = f(x,u), x ∈ Ω, u = 0, x ∈ ∂Ω. Especially, an existence criterion for infinite many pairs of solutions for the problem is obtained. The discussion is based on the theory of the spaces Lp(x)(Ω) and W01, p(x)(Ω).


Boundary Value Problems | 2013

Solutions and nonnegative solutions for a weighted variable exponent impulsive integro-differential system with multi-point and integral mixed boundary value problems

Rong Dong; Qihu Zhang

This paper investigates the existence of solutions for a weighted p(t)-Laplacian impulsive integro-differential system with multi-point and integral mixed boundary value problems via Leray-Schauder’s degree; sufficient conditions for the existence of solutions are given. Moreover, we get the existence of nonnegative solutions.MSC:34B37.


Boundary Value Problems | 2013

Existence of solutions and nonnegative solutions for a class of p(t)-Laplacian differential systems with multipoint and integral boundary value conditions

Guizhen Zhi; Yunrui Guo; Yan Wang; Qihu Zhang

This paper explores the existence of solutions for a class of p(t)-Laplacian differential systems with multipoint and integral boundary value conditions via Leray-Schauder’s degree. Moreover, the existence of nonnegative solutions is discussed.MSC:34B10.


Journal of Applied Mathematics | 2011

Existence of Solutions for a Class of Variable Exponent Integrodifferential System Boundary Value Problems

Guizhen Zhi; Yunrui Guo; Yan Wang; Qihu Zhang

This paper investigates the existence of solutions for a class of variable exponent integrodifferential system with multipoint and integral boundary value condition in half line. When the nonlinearity term 𝑓 satisfies sub-(𝑝−−1) growth condition or general growth condition, we give the existence of solutions and nonnegative solutions via Leray-Schauder degree at nonresonance, respectively. Moreover, the existence of solutions for the problem at resonance has been discussed.


Boundary Value Problems | 2011

Existence of solutions for weighted p(r)-Laplacian impulsive system mixed type boundary value problems

Li Yin; Yunrui Guo; Guizhen Zhi; Qihu Zhang

This paper investigates the existence of solutions for weighted p(r)-Laplacian impulsive system mixed type boundary value problems. The proof of our main result is based upon Gaines and Mawhins coincidence degree theory. Moreover, we obtain the existence of nonnegative solutions.


Abstract and Applied Analysis | 2010

Existence and Asymptotic Behavior of Boundary Blow-Up Solutions for Weighted ()-Laplacian Equations with Exponential Nonlinearities

Li Yin; Yunrui Guo; Jing Yang; Bibo Lu; Qihu Zhang

This paper investigates the following 𝑝(𝑥)-Laplacian equations with exponential nonlinearities: −Δ𝑝(𝑥)𝑢


Journal of Mathematical Analysis and Applications | 2005

Eigenvalues of p(x)-Laplacian Dirichlet problem ✩

Xianling Fan; Qihu Zhang; Dun Zhao


Nonlinear Analysis-theory Methods & Applications | 2007

Existence of positive solutions for elliptic systems with nonstandard p(x)-growth conditions via sub-supersolution method

Qihu Zhang


Journal of Mathematical Analysis and Applications | 2007

Existence of positive solutions for a class of p(x)-Laplacian systems ✩

Qihu Zhang


Journal of Mathematical Analysis and Applications | 2007

Existence of solutions for weighted p(r)-Laplacian system boundary value problems ✩

Qihu Zhang

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Guizhen Zhi

Zhengzhou University of Light Industry

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Li Yin

Zhengzhou University of Light Industry

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Yan Wang

Zhengzhou University of Light Industry

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Jingjing Liu

Zhengzhou University of Light Industry

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Rong Dong

Zhengzhou University of Light Industry

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Xiaopin Liu

Zhengzhou University of Light Industry

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