Volume IV
VOL IV
Geombinatorics Quarterly
July 1994 (Volume IV, Issue 1)
| Editors Page | 3 | |
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New Essays |
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| Coloring R with the respect to Different Metrics | by Izak Broere | 4 |
| Sets of Points in the Plane with Few Isosceles Triangles | by Paul Erdös | 10 |
| Quadrangles, Pentagons, and Computers, Revisited | by Branko Grünbaum | 11 |
| How to Represent Measurement Errors? | by Vladik Kreinovich | 17 |
| A Triangle-Free 4-chramatic Graph in the Plane | by Paul O’Donnell | 23 |
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Letters to the Editor |
Robert Hochberg and Paul O’Donnell | 30 |
October 1994 (Volume IV, Issue 2)
| Editors Page | ||
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New Essays |
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| Geombinatoric Problems of Environmentally Safe Manufacturing and Linear Logic | by Daniel E. Cooke, Richard Duran, Ann Gates, and Vladik Kreinovich | 35 |
| Equidistant Points in the Plane | by Branko Grünbaum | 36 |
| Good Packings in Bad Coverings | by Paul Erdös | 49 |
| Uniform Tilings of 3-Space | by Branko Grünbaum | 49 |
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Errata |
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Corrections for Sets of Points in the Plane with Few Isosceles Triangles |
by Paul Erdös | 57 |
| Recent Books | 58 |
January 1995 (Volume IV, Issue 3)
| Editors Page | 63 | |
| New Essays | ||
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A 4-Chromatic Unit DIstance Graph With No Triangles |
64 | |
| The Parabolic 3-Space | by Paul Erdös | 77 |
| Which Algorithms are Feasible and Which are not Depends on the Geometry of Space-Time | by Alexander Soifer | 80 |
| Recent Books | 98 |
April 1995 (Volume IV, Issue 4)
| Editors Page | 103 | |
| New Essays | ||
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Some Problems Arising from Unit-Distance Graphs with no Triangles |
by Kiran B. Chilakarmarri | 104 |
| Squares in a Square | by Paul Erdös, Alexander Soifer | 110 |
| The Angle-side Reciprocity of Quadrangles | by Branko Grünbaum | 115 |
| Unit-Distance Preserving Theorem is Logically Non-Trivial | by Olga Kosheleva, Vladik Kreinovich… | 119 |
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Solutions of Previsoudly Published Problems |
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| Venn Diagrams: Announcement of some new results | by Kirran B Chilakamarri, Peter Hamburger, Raymond E Pippert | 129 |
| Recent Books | 138 |