Now showing items 11-20 of 126
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. ...
Boundary value problems singular in the solution variable with nonlinear boundary data
(Cambridge University Press (CUP), 1996-10-01)
Existence results are established for the equation y '' +f(t, y) = 0, 0 < t < 1. Here f may be singular in y and f is allowed to change sign. Our boundary data include y(0) = y'(1) + ky(1) = 0, k > -1 and y(0) = ...
(Elsevier BV, 2002-04-01)
Positive solutions for (p,n−p) conjugate boundary value problems
(Elsevier BV, 1998-12-01)
Fixed point theory for generalized contractions on spaces with two metrics
(Elsevier BV, 2000-08-01)
Positive solutions to superlinear singular boundary value problems
(Elsevier BV, 1998-02-01)
Some nonoscillation criteria for inclusions
(Cambridge University Press (CUP), 2006-02-01)
New nonoscillatory criteria are presented for second order differential inclusions. The theory relies on Ky Fan's fixed point theorem for upper semicontinuous multifunctions.
Coincidence points for perturbations of linear fredholm maps of index zero
(European Mathematical Publishing House, 1999-01-01)
Coincidence points for single and set valued maps are discussed in this paper. We show if F is essential and F congruent to G then G has a coincidence point.
Second-order boundary value problems of singular type
(Elsevier BV, 1998-10-01)