On a theorem of Helly
β Scribed by N. A. Bobylev
- Publisher
- SP MAIK Nauka/Interperiodica
- Year
- 1995
- Tongue
- English
- Weight
- 354 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0001-4346
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The d-convex sets in a metric space are those subsets which include the metric interval between any two of its elements. Weak modularity is a certain interval property for triples of points. The d-convexity of a discrete weakly modular space X coincides with the geodesic convexity of the graph forme
Let P be a family of simple polygons in the plane. If every three (not necessarily distinct) members of P have a simply connected union and every two members of P have a nonempty intersection, then N{P:P in P) Β’ Β’. Applying the result to a finite family C of orthogonally convex polygons, the set fq{