ZERO EPI KKM TYPE MAPS AND FIXED POINTS

Dedicated with admiration to Professor Constantin Fetecau

 

Donal O’Regan†

Abstract: In this paper, we present two approaches to fixed point theory for compact KKM type maps. In particular, we consider Leray–Schauder type alternatives for these maps.

Keywords: fixed points, set–valued maps, zero epi maps.

MSC: 47H10, 54H25.

DOI 10.56082/annalsarscimath.2026.4.233

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*Accepted for publication on August 07, 2026
†donal.oregan@nuigalway.ie, School of Mathematical and Statistical Sciences, University of Galway, Ireland

PUBLISHED in

Annals Academy of Romanian Scientists Series on Mathematics and Its Application,

Volume 18 no 4, 2026

ISSN ONLINE 2066 – 6594
ISSN PRINT 2066 – 5997