Abstract
Let $\Gamma$ be a minimal chart with exactly seven white vertices. In this paper, we show that $\Gamma$ is a chart of type $(7),(5,2),(4,3),(3,2,2)$ or $(2,3,2)$ if necessary we change the labels. We investigate minimal charts with loops or lenses.
Citation
Teruo Nagase. Akiko Shima. "Properties of minimal charts and their applications II." Hiroshima Math. J. 39 (1) 1 - 36, March 2009. https://doi.org/10.32917/hmj/1237392378
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