Volume VII


Geombinatorics Quarterly

October 1997 (Volumes VII, Issue 1)

On Quadrangles Derived from Quadrangles By Branko Grünbaum 5
Geometric Approach to Quark Confinement By Vladik Kreinovich and Piotr Wojciechowski 9
In Memory of Paul Erdös Our Joint Problems in Combinatoral Geometry By Alexander Soifer 25
Squares inside of a Square By Richard Stong 29

October 1997 (Volumes VII, Issue 2)

On Quadrangles Derived from Quadrangles – Part 2 By Branko Grünbaum 41
Geometry of Errors Revisited: A Natural Way to Vector-Valued Spaces By Gerhard HeindlVladik Kreinovich, and Bernadette Bouchon-Meunier 47
Folding and Turning Along Geodesics in a Convex Surface By János Pach 61
In Memory of Paul Erdös: Our Joint Problems in Combinational Geometry III By Alexander Soifer 66

January 1998 (Volume VII, Issue 3)

Area Bounds in Convex Lattice Polygons By Eberth G. Alarcon II 77
Was Stonehenge an Observatory? By Gilbert Castillio 83
On Quadrangles Derived from Quadrangles – Part 3 By Branko Grünbaum 88
A Space- Time Version of Tyszka’s Result By Misha Koshelev 95
Heesch-Tiles Based on Regular Polygons By Peter Readschelders 101
In Memory of Paul Erdös: Our Joint Problems in Combinatorial Geometry IV By Alexander Soifer 107

April 1998 (Volume VII, Issue 4)

Kings on Triangular Honeycombs By Heiko Harborth and Peter Stark 117
How to define and Average of Several Sets? By Vladik Kreinovich and Ilya Molchanov 123
Sets with Integral Distances and a Coloring of Edges of an Infinite Graph By Aleksandr Kuz’minykh 132
Discs in a Disc By Alexander Soifer 139
Corrections By Wei Wang and Olga Koshelva. 141