Korean J. Math. Vol. 18 No. 4 (2010) pp.369-380

A CRITERION FOR VERTEX EXTREMAL LENGTH PARABOLIC GRAPHS AND ITS APPLICATION

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Byung-Geun Oh

Abstract

We give a criterion for vertex extremal length parabol-
icity of locally finite planar graphs, and use it to show that a disk
triangulation graph is circle packing parabolic if and only if its im-
mediate finer graphs are circle packing parabolic.



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