Isoperimetric Constants of Infinite Plane Graphs
Isoperimetric Constants of Infinite Plane Graphs
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DOI:
10.1007/s00454-002-0694-2
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发表时间:
2002-08
影响因子:
0.8
通讯作者:
S. Lawrencenko;M. Plummer;X. Zha
中科院分区:
文献类型:
--
作者:
S. Lawrencenko;M. Plummer;X. Zha
LetGbe an infinite locally finite plane graph with one end and letHbe a finite plane subgraph ofG. Denote bya(H)the number of finite faces ofHand byl(H) the number of the edges ofHthat are on the boundary of the infinite face or a finite face not inH. Define the isoperimetric constanth (G)to be infHl(H) /a(H)and define the isoperimetric constanth (δ)to be infGh (G)where the infimum is taken over all infinite locally finite plane graphsGhaving minimum degreeδand exactly one end. We establish the following bounds onh (δ)forδ ≥ 7: