# Search results for: Dehong Ji

Qualitative Theory of Dynamical Systems > 2016 > 15 > 1 > 39-48

Bulletin of the Malaysian Mathematical Sciences Society > 2018 > 41 > 1 > 249-263

*f*, existence results of positive solutions are obtained. The proof is based upon theory of Leray–Schauder degree. The interesting point is the nonlinear term

*f*(

*t*,

*u*) may be singular at $$u=0$$ ...

Mathematical Methods in the Applied Sciences > 37 > 8 > 1232 - 1239

Boundary Value Problems > 2012 > 2012 > 1 > 1-6

*p*-Laplacian in Banach spaces

*E*, where

^{:}

*θ*is the zero element of

*E*. Although the fixed point theorem of strict-set-contractions operator is used extensively in yielding positive solutions for boundary value problems in Banach spaces,...

Nonlinear Analysis > 2010 > 72 > 2 > 955-964

Mathematical Methods in the Applied Sciences > 33 > 2 > 188 - 197

*p*‐Laplacian where

*ϕ*

_{p}(

*s*)=|

*s*|

^{p−2}

*s, p*>1,

*f*is a lower semi‐continuous function. Using the fixed‐point theorem of cone expansion and compression of norm type, the existence of positive solution and infinitely many positive solutions for Sturm–Liouville‐like...

Nonlinear Analysis > 2009 > 71 > 11 > 5406-5416

Nonlinear Analysis > 2009 > 71 > 3-4 > 1250-1262

Nonlinear Analysis > 2009 > 70 > 10 > 3561-3566

Journal of Computational and Applied Mathematics > 2008 > 222 > 2 > 351-363

Nonlinear Analysis > 2008 > 68 > 9 > 2638-2646

Applied Mathematics and Computation > 2008 > 197 > 1 > 51-59

Applied Mathematics Letters > 2008 > 21 > 3 > 268-274

Applied Mathematics and Computation > 2008 > 196 > 2 > 511-520

_{p}(s)=∣s∣

^{p−2}s, p>1, ξi∈(0,1) with 0<ξ1<ξ2<⋯<ξn<1 and αi,βi∈[0,∞) satisfy 0<∑i=1nαi,∑i=1nβi<1. The nonlinear term f may change sign. Using a fixed...

Journal of Applied Mathematics and Computing > 2008 > 26 > 1-2 > 451-463

*p*-Laplacian $$(\phi_{p}(u'))'+f(t,u,u')=0,\quad t\in [0,1],$$ subject to the boundary value conditions: $$u'(0)=\sum_{i=1}^{n-2}\alpha_{i}u'(\xi_{i}),\qquad u(1)=\sum_{i=1}^{n-2}\beta_{i}u(\xi_{i}),$$ where

*φ*

_{ p }(

*s*)=|

*s*|

^{ p−2}⋅

*s*,

*p*>1;

*ξ*

_{ }...

Journal of Computational and Applied Mathematics > 2007 > 208 > 2 > 425-433

Applied Mathematics and Computation > 2007 > 189 > 2 > 1087-1098

Applied Mathematics and Computation > 2007 > 187 > 2 > 1315-1325

_{p}(s)=∣s∣

^{p−2}·s, p>1. By means of a fixed point theorem due to Avery and Peterson, sufficient conditions are obtained that guarantee the existence...