Bulletin of the
Korean Mathematical Society
BKMS

ISSN(Print) 1015-8634 ISSN(Online) 2234-3016

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Bull. Korean Math. Soc. 2010; 47(1): 121-129

Printed January 1, 2010

https://doi.org/10.4134/BKMS.2010.47.1.121

Copyright © The Korean Mathematical Society.

Invariance of domain theorems for condensing multivalued vector fields

In-Sook Kim

Sungkyunkwan University

Abstract

Using a degree theory for countably condensing multivalued maps, we show that under certain conditions an invariance of domain theorem holds for countably condensing or countably $k$-contractive multivalued vector fields.

Keywords: invariance of domain, countably condensing, multivalued vector fields, degree theory

MSC numbers: 47H09, 54C60, 47H11