Browsing Externally hosted open access publications with University of Galway authors (1) by Author "Agarwal, Ravi P."
Now showing items 1-20 of 52
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A note on the existence of multiple fixed points for multivalued maps with applications
Agarwal, Ravi P.; O'Regan, Donal (Elsevier BV, 2000-01-01) -
A note on the topological transversality theorem for acyclic maps
Agarwal, Ravi P.; O’Regan, Donal (Elsevier BV, 2005-01-01) -
Boundary value problems of nonsingular type on the semi-infinite interval
Agarwal, Ravi P.; O'Regan, Donal (Mathematical Institute, Tohoku University, 1999-01-01)Existence of a positive solution is established for second order boundary value problems on the semi-infinite interval. -
Coincidence points for perturbations of linear fredholm maps of index zero
Agarwal, Ravi P.; O'Regan, Donal (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. -
Cone compression and expansion fixed point theorems in fréchet spaces with applications
Agarwal, Ravi P.; O'Regan, Donal (Elsevier BV, 2001-04-01) -
Constant-sign solutions of systems of higher order boundary value problems with integrable singularities
Agarwal, Ravi P.; O’Regan, Donal; Wong, Patricia J.Y. (Elsevier BV, 2006-12-01) -
Differential inclusions on proximate retracts of separable hilbert spaces
Agarwal, Ravi P.; O'Regan, Donal (Rocky Mountain Mathematics Consortium, 2006-06-01)New existence results are presented which guarantee the existence of viable solutions to differential inclusions in separable Hilbert spaces. Our results rely on the existence of maximal solutions for an appropriate ... -
Discrete focal boundary-value problems
Agarwal, Ravi P.; O'Regan, Donal (Cambridge University Press (CUP), 2000-02-01)In this paper we shall employ the nonlinear alternative of Leray-Schauder and known sign properties of a related Green's function to establish the existence results for the nth-order discrete focal boundary-value problem. ... -
Eigenvalues and the one-dimensional p-laplacian
Agarwal, Ravi P.; Lü, Haishen; O'Regan, Donal (Elsevier BV, 2002-02-01) -
Existence and multiplicity of positive solutions for singular semipositone $p$-laplacian equations
Agarwal, Ravi P.; Cao, Daomin; Lü, Haishen; O'Regan, Donal (Canadian Mathematical Society, 2006-06-01)Positive solutions are obtained for the boundary value problem [GRAPHICS] Here f(t, u) >= -M, (M is a positive constant) for (t, u) is an element of [0, 1] X (0, infinity). We will show the existence of two positive ... -
Existence criteria for operator inclusions in abstract spaces
Agarwal, Ravi P.; O'Regan, Donal (Elsevier BV, 2000-01-01) -
Existence criteria for singular boundary value problems with sign changing nonlinearities
Agarwal, Ravi P.; O'Regan, Donal (Elsevier BV, 2002-08-01) -
Existence criteria for singular initial value problems with sign changing nonlinearities
Agarwal, Ravi P.; O'Regan, Donal; Lakshmikantham, V. (Hindawi Limited, 2001-01-01)A general existence theory is presented for initial value problems where our nonlinearity may be singular in its dependent variable and may also change sign. -
Existence of positive solutions for boundary-value problems with singularities in phase variables
Agarwal, Ravi P.; ORegan, Donal; Stank, Svatoslav (Cambridge University Press (CUP), 2004-02-01)The singular boundary-value problem (g(x'))' = muf(t,x,x'), x'(0) = 0, x(T) = b > 0 is considered. Here mu is the parameter and f(t,x,y), which satisfies local Caratheodory conditions on [0, T] x (R \ {b}) x (R \ {0}), ... -
Existence of three solutions to integral and discrete equations via the leggett williams fixed point theorem
Agarwal, Ravi P.; O'Regan, Donal (Rocky Mountain Mathematics Consortium, 2001-03-01)Criteria are developed for the existence of three nonnegative solutions to integral and discrete equations. The strategy involves using the Leggett Williams fixed point theorem. -
Existence theorems for the one-dimensional singular p-laplacian equation with a nonlinear boundary condition
Lü, Haishen; O’Regan, Donal; Agarwal, Ravi P. (Elsevier BV, 2005-10-01)