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On the Number of Continua Having a Finite Set of Non-cut Points

Matthew M.Cropper1
1Department of Mathematics West Virginia University Morgantown, WV 26506-6310

Abstract

A continuum with finitely many non-cut points is an irreducible tree. A two-variable power series for the number of (unlabelled) irreducible trees with p pendant and q interior vertices.The result is then specialized to get Harary’s series for the number of irreducible trees with n vertices and to another series for the number of irreducible trees with p pendant vertices, a result of interest in continuum theory.