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On fixed point index theory for the sum of operators and applications to a class of ODEs and PDEs

Svetlin Georgiev Georgiev

Bulgaria

University of Sofia

Department of Differential Equations, Faculty of Mathematics and Informatics

Karima Mebarki

https://orcid.org/0000-0002-6679-5059

Algeria

University of Bejaia

Laboratory of Applied Mathematics, Faculty of Exact Sciences.

Submitted: 2020-03-10

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Accepted: 2021-04-09

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Published: 2021-10-01

DOI: https://doi.org/10.4995/agt.2021.13248