7. Symposium on Computational Geometry 1991: North Conway, NH, USA

Session 1

• Jirí Matousek:
  Efficient Partition Trees. 1-9
  
• Pankaj K. Agarwal, Micha Sharir:
  Counting Circular Arc Intersections. 10-20
  
• Mark de Berg, Dan Halperin, Mark H. Overmars, Jack Snoeyink, Marc J. van Kreveld:
  Efficient Ray Shooting and Hidden Surface Removal. 21-30
  
• Matthew J. Katz, Mark H. Overmars, Micha Sharir:
  Efficient Hidden Surface Removal for Objects with small Union Size. 31-40
  

Session 2

• Pankaj K. Agarwal, Marc J. van Kreveld, Mark H. Overmars:
  Intersection Queries for Curved Objects (Extended Abstract). 41-50
  
• Mark de Berg, Marc J. van Kreveld, Bengt J. Nilsson:
  Shortest Path Queries in Rectilinear Worlds of Higher Dimension (Extended Abstract). 51-60
  
• Yi-Jen Chiang, Roberto Tamassia:
  Dynamization of the Trapezoid Method for Planar Point Location (Extended Abstract). 61-70
  
• Binay K. Bhattacharya, Jurek Czyzowicz, Peter Egyed, Ivan Stojmenovic, Godfried T. Toussaint, Jorge Urrutia:
  Computing Shortest Transversals of Sets (Extended Abstract). 71-80
  
• Binay K. Bhattacharya, Shreesh Jadhav, Asish Mukhopadhyay, Jean-Marc Robert:
  Optimal Algorithms for Some Smallest Intersection Radius Problems (Extended Abstract). 81-88
  

Session 3: Invited Lecture

• H. S. M. Coxeter:
  Orthogonal Trees. 89-97
  

Session 4

• David Avis, Komei Fukuda:
  A Pivoting Algorithm for Convex Hulls and Vertex Enumeration of Arrangements and Polyhedra. 98-104
  
• Boris Aronov, Joseph O'Rourke:
  Nonoverlap of the Star Unfolding. 105-114
  
• Ketan Mulmuley:
  A Generalization of Dehn-Sommerville Relations to Simple Stratified Spaces. 115-120
  

Session 5

• Ketan Mulmuley:
  Randomized Multidimensional Search Trees: Dynamic Sampling (Extended Abstract). 121-131
  
• Ketan Mulmuley, Sandeep Sen:
  Dynamic Point Location in Arrangements of Hyperplanes. 132-141
  
• Franz Aurenhammer, Otfried Schwarzkopf:
  A Simple On-Line Randomized Incremental Algorithm for Computing Higher Order Voronoi Diagrams. 142-151
  
• Kenneth L. Clarkson, Richard Cole, Robert Endre Tarjan:
  Randomized Parallel Algorithms for Trapezoidal Diagrams. 152-161
  

Session 6

• Antal Balog, Imre Bárány:
  On the Convex Hull of the Integer Points in a Disc. 162-165
  
• Christian Icking, Rolf Klein:
  The Two Guards Problem. 166-175
  
• Sivan Toledo:
  Extremal Polygon Containment Problems. 176-185
  
• Helmut Alt, Bernd Behrends, Johannes Blömer:
  Approximate Matching of Polygonal Shapes (Extended Abstract). 186-193
  
• Daniel P. Huttenlocher, Klara Kedem, Micha Sharir:
  The Upper Envelope of Voronoi Surfaces and Its Applications. 194-203
  

Session 7: Invited Lecture

• Frank Morgan:
  Minimal Surfaces, Crystals, and Norms on Rⁿ. 204-213
  

Session 8

• Barry Schaudt, Robert L. (Scot) Drysdale III:
  Multiplicatively Weighted Crystal Growth Voronoi Diagrams (Extended Abstract). 214-223
  
• Gordon T. Wilfong:
  Nearest Neighbor Problems. 224-233
  
• Matthew Dickerson, Robert L. (Scot) Drysdale III:
  Enumerating k Distances for n Points in the Plane. 234-238
  

Session 9

• Clyde L. Monma, Subhash Suri:
  Transitions in Geometric Minimum Spanning Trees (Extended Abstract). 239-249
  
• Claire Kenyon, Richard Kenyon:
  How to Take Short Cuts. 250-255
  
• Jeffrey S. Salowe:
  Construction of Multidimensional Spanner Graphs, with Applications to Minimum Spanning Trees. 256-261
  

Session 10

• Takeshi Tokuyama, Jun Nakano:
  Geometric Algorithms for a Minimum Cost Assignment Problem. 262-271
  
• Paola Bertolazzi, Giuseppe Di Battista:
  On Upward Drawing Testing of Triconnected Digraphs (Extended Abstract). 272-280
  
• Michael Formann, Frank Wagner:
  A Packing Problem with Applications to Lettering of Maps. 281-288
  
• Collette R. Coullard, Anna Lubiw:
  Distance Visibility Graphs. 289-296
  

Session 11

• Tetsuo Asano, Leonidas J. Guibas, Takeshi Tokuyama:
  Walking on an Arrangement Topologically. 297-306
  
• Boris Aronov, Jirí Matousek, Micha Sharir:
  On the Sum of Squares of Cell Complexities in Hyperplane Arrangements. 307-313
  
• Dan Halperin:
  On the Complexity of a Single Cell in Certain Arrangements of Surfaces in 3-Space (Extended Abstract). 314-323
  
• Esther M. Arkin, Dan Halperin, Klara Kedem, Joseph S. B. Mitchell, Nir Naor:
  Arrangements of Segments that Share Endpoints: Single Face Results. 324-333
  
• Steven Fortune, Victor Milenkovic:
  Numerical Stability of Algorithms for Line Arrangements. 334-341
  

Session 12

• Marshall W. Bern, David Eppstein:
  Polynomial-Size Nonobtuse Triangulation of Polygons. 342-350
  
• Boris Aronov, Paul Erdös, Wayne Goddard, Daniel J. Kleitman, Michael Klugerman, János Pach, Leonard J. Schulman:
  Crossing Families. 351-356
  
• V. T. Rajan:
  Optimality of the Delaunay Triangulation in R^d. 357-363
  
• Tamal K. Dey:
  Triangulation and CSG Representation of Polyhedra with Arbitrary Genus. 364-371