Results 231 to 240 of about 105,286 (276)

Jumping nonlinearities for neumann BVPs with positive forcing

Nonlinear Analysis: Theory, Methods & Applications, 1993
The paper deals with the Neumann boundary value problem \(Lu:\equiv\ddot u+\mu(t)u^ +-\nu(t)u^ -=p(t)\), \(\dot u(0)=0=\dot u(\pi)\) where \(\mu\), \(\nu\), \(p\) are \(L^ 1\) functions and \(p(t)\geq 0\). For certain \(\mu(t)\), \(\nu(t)\) necessary and sufficient conditions on \(p(t)\) are given for existence of a positive solution, of a solution \(u\
Luis Sanchez
exaly   +3 more sources

An elliptic problem with jumping nonlinearities

Nonlinear Analysis: Theory, Methods & Applications, 2005
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Zhaoli Liu
exaly   +2 more sources

Operators with jumping nonlinearities and combinatorics

Nonlinear Analysis: Theory, Methods & Applications, 1988
The solvability of equations with jumping nonlinearities \[ (1)\quad u+\lambda Su^+-\mu Su^-=f \] in finite dimensional spaces is studied. Here S is a linear symmetric operator in \({\mathbb{R}}^ n\), \(\lambda\) and \(\mu\) are real parameters, \(u^+=[u^+_ 1,...,u^+_ n]\), \(u^- [u^-_ 1,...,u^-_ n]\).
exaly   +2 more sources

Jumping nonlinearities and weighted Sobolev spaces [PDF]

open access: yesJournal of Differential Equations, 2005
Working in a weighted Sobolev space, a new result involving jumping nonlinearities for a semilinear elliptic boundary value problem in a bounded domain in RN is established. The nonlinear part of the equation is assumed to grow at most linearly and to be
Víctor L Shapiro
exaly   +2 more sources

Differential problems with symmetries: equations with jumping nonlinearities

Nonlinear Analysis: Theory, Methods & Applications, 1982
Sérgio Solimini
exaly   +3 more sources

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