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Twin solutions to singular dirichlet problems
(Elsevier BV, 1999-12-01)
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.
Boundary value problems of nonsingular type on the semi-infinite interval
(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.