Articles with "degree theory" as a keyword



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Infinite-Dimensional Degree Theory and Ramer’S Finite Co-Dimensional Differential Forms

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Published in 2021 at "Quarterly Journal of Mathematics"

DOI: 10.1093/qmath/haab022

Abstract: Infinite-dimensional degree theory, especially for Fredholm maps with positive index as developed with Tromba, is combined with Ramer’s unpublished thesis work on finite co-dimensional differential forms. As an illustrative example, the approach of Nicolaescu and… read more here.

Keywords: differential forms; dimensional degree; finite dimensional; degree theory ... See more keywords

A Degree Theory for Compact Perturbations of Monotone Type Operators and Application to Nonlinear Parabolic Problem

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Published in 2017 at "Abstract and Applied Analysis"

DOI: 10.1155/2017/7236103

Abstract: Let be a real locally uniformly convex reflexive Banach space with locally uniformly convex dual space . Let be maximal monotone, be bounded and of type and be compact with such that lies in (i.e.,… read more here.

Keywords: existence; theory; nonlinear parabolic; degree theory ... See more keywords

Existence results for coupled sequential ψ-Hilfer fractional impulsive BVPs: topological degree theory approach

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Published in 2024 at "Boundary Value Problems"

DOI: 10.1186/s13661-024-01901-y

Abstract: In this paper, the coupled system of sequential ψ -Hilfer fractional boundary value problems with non-instantaneous impulses is investigated. The existence results of the system are proved by means of topological degree theory. An example… read more here.

Keywords: existence results; degree theory; topological degree; hilfer fractional ... See more keywords