## Search

Now showing items 1-10 of 23

#### Dynamic equations on time scales: a survey

(Elsevier BV, 2002-04-01)

#### Positive and maximal positive solutions of singular mixed boundary value problem

(Walter de Gruyter GmbH, 2009-01-01)

The paper is concerned with existence results for positive solutions and maximal positive solutions of singular mixed boundary value problems. Nonlinearities h(t;x;y) in differential equations admit a time singularity at ...

#### Dead cores of singular dirichlet boundary value problems with ϕ-laplacian

(Institute of Mathematics, Czech Academy of Sciences, 2008-07-30)

The paper discusses the existence of positive solutions, dead core solutions and pseudodead core solutions of the singular Dirichlet problem (phi(u'))' = lambda f(t, u, u'), u(0) = u(T) = A. Here lambda is the positive ...

#### Constant-sign solutions for systems of singular integral equations of hammerstein type

(Elsevier BV, 2009-10-01)

#### Solvability of singular dirichlet boundary-value problems with given maximal values for positive solutions

(Cambridge University Press (CUP), 2005-02-01)

The singular boundary-value problem (g(x'(t)))' = muf (t, x(t), x'(t)), x(0) = x(T) = 0 and max {x(t) : 0 less than or equal to t less than or equal to T} = A is considered. Here p is the parameter and the negative function ...

#### Multiplicity of positive periodic solutions to second order differential equations

(Cambridge University Press (CUP), 2006-04-01)

In this paper, we study the existence of positive periodic solutions to the equation x" = f (t, x). It is proved that such a equation has more than one positive periodic solution when the nonlinearity changes sign. ...

#### Oscillation of functional differential equations

(Elsevier BV, 2005-02-01)

Some new criteria for the oscillation of functional differential equations of the form,
d/dt[1/a(n-1)(t) d/dt q (t) f (x [g (t)]) = 0, dt a._1 (t) Tt -a,,-2 (t) Tt -al(t) dt
are presented in this paper. @ 2005 Elsevier ...

#### Constant-sign periodic and almost periodic solutions of a system of difference equations

(Elsevier BV, 2005-11-01)

#### A note on equilibria for abstract economies

(Elsevier BV, 2001-08-01)

#### Fixed point theory for self maps between fréchet spaces

(Elsevier BV, 2001-04-01)