Vol IV 1994-1995

Geombinatorics

Vol IV, Issues 1-4

July 1994 – April 1995


Volume 1, Volume 2, Volume 3, Volume 4


Contents

July 1994  (Volume IV, Issue 1)

  • Editors Page……………………………………………….3
  • New Essays
  • 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?
    Geombinatorics Approach
    by Vladik Kreinovich……………………………………17
  • A Triangle-Free 4-chramatic Graph in the Plane
    by Paul O’Donnell……………………………………….23
  • Letters to the Editor
  • Robert Hochberg and Paul O’Donnell…………30

Contents

 October 1994 (Volume IV, Issue 2)

  • Editors Page
  • New Essays
  • 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………………………………………………………………48
  •  Uniform Tilings of 3-Space
    by Branko Grünbaum………………………………………………….49
  • Errata
  • Corrections for Sets of Points in the Plane with Few Isosceles Triangles
    by Paul Erdös……………………………………………………………….57
  • Recent Books……………………………………………………………….58

Contents

January 1995 (Volume IV, Issue 3)

  • Editors Page………………………………………………………………..63
  • New Essays
  • A 4-Chromatic Unit DIstance Graph With No Triangles
    by Kiran B. Chilakamarri………………………………………………64
  • The Parabolic 3-Space
    by Branko Grünbaum………………………………………………….77
  • Which Algorithms are Feasible and Which are not Depends on the Geometry of Space-Time
    by Dara Morgenstein, Vladik Kreinovich………………………80
  • Recent Books………………………………………………………………98

Contents 

April 1995 (Volume IV, Issue 4)

  • Editors Page………………………………………………………………103
  • New Essays
  • 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
  • Solutions of Previsoudly Published Problems
  • Venn Diagrams: Announcement of some new results
    by Kirran B Chilakamarri, Peter Hamburger, Raymond E Pippert…..129

New Books………………………………………………………………….138