Geombinatorics Quarterly
July 2009 (Volume XIX, Issue 1)
36 Two-Colored Points with no Empty Monochromatic Convex Fourgons | By Clemens Huemer and Carlos Seara | 5 |
Geometry of a Cockroach Paths: A Possible Explanation | 7 | |
On Chromatic Numbers of Space-Times: Open Problems | By Olga Kosheleva and Vladik Kreinovich | 14 |
Tiling a Deficient Rectangle by P-Pentominoes | By Catalin Nitica and Viorel Nitika | 18 |
Triangle-free minimum distance graphs in the plane | 28 |
October 2009 (Volume XIX, Issue 2)
Part I: Branko Grünbaum, Mathematician & Man | ||
The Great Geometer is 80 | 37 | |
On Branko Grünbaum’s 80th Birthday | By Mathew Kahle | 42 |
Branko, teacher, mentor, and a great friend | 46 | |
Branko Grünbaum is Eighty | By Joseph Zaks | 49 |
Part II: Mathematical Essays | ||
Uniform Columns | 52 | |
A Sausage Conjecture for Edge-to-Edge Regular Pentagons | By Jens-P. Bode and Heiko Harborth | 60 |
The Odd-Distance Plane Graph | 62 | |
A Note on Blocking Visibility Between Points | By Adrian Dumitrescu, János Pach, and Géza Tóth | 67 |
January 2010 (Volume XIX, Issue 3)
Point-Sets in General Position with Many Similar Copies of a Pattern | 81 | |
Tiling’s by Some Nonconvex Parallelohedra | 100 | |
Early Start can Inhibit Learning: A Geometric Explanation | 108 | |
Monochromatic Triangles in E2 | 119 |
April 2010 (Volume XIX, Issue 4)
Point-Sets in General Position with Many Similar Copies of a Pattern: Without a Number of Colinear Points or in Parallelograph-Free Position | 133 | |
Geometric Proof of a Ramsey-Type Result for Disjoint Empty Convex Polygons Diagonalization is also Practically Useful: A Geometric Idea | By Bhaswar B. Bhatacharya and Sandip Das | 146 |
3-Regular Mathstick Kurz and Giuseppe Mazzuoccolo | 156 |