𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Prof. Grünbaum on creation

✍ Scribed by W. L. Craig


Publisher
Springer
Year
1994
Tongue
English
Weight
966 KB
Volume
40
Category
Article
ISSN
1876-2514

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📜 SIMILAR VOLUMES


Grünbaum's gap conjecture
✍ Grattan Murphy; Ren Ding 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 550 KB

Purdy's generalization of Griinbaum's gap conjecture is roved for all arrangements w&h a sufficiently high maximum number of concurrent lines. We also improve Purdy's bounds for the general theorem and establish two lower bounds for h(A) for all arrangements.

Grünbaum colorings of toroidal triangula
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## Abstract We prove that if __G__ is a triangulation of the torus and χ(__G__)≠5, then there is a 3‐coloring of the edges of __G__ so that the edges bounding every face are assigned three different colors. © 2009 Wiley Periodicals, Inc. J Graph Theory 63: 68–81, 2010