Glasnik Matematicki, Vol. 32, No.2 (1997), 291-300.

A BOUND FOR THE SPAN OF CERTAIN PLANE SEPARATING CONTINUA

Thelma West

Department of Mathematics, University of Southwestern Louisiana, Lafayette, LA 70504-1010, USA


Abstract.   Let Y be a plane separating continuum. Suppose X is an indented circle which is contained in a bounded component of R2 \ Y. It is shown that the span of Y is larger than or equal to the span of X.

1991 Mathematics Subject Classification.   54F15, 54F20.

Key words and phrases.   Span, simple closed curve.


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