The main contribution of this thesis is the establishment of a major case of Bruhn\'s conjecture,namely:Every infinite locally finite 4-connected planar graph with no dividing cycle admits a Hamilton circle.
本文的主要贡献就是研究Bruhn猜想的另一种主要情况,即任何一个不含分割圈的局部有限4连通无限平面图均存在一个哈密顿圈。
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