Intersections of Sets Starshaped Via Paths of Bounded Length
被引:0
|
作者:
Marilyn Breen
论文数: 0引用数: 0
h-index: 0
机构:University of Oklahoma,
Marilyn Breen
机构:
[1] University of Oklahoma,
[2] USA,undefined
来源:
Monatshefte für Mathematik
|
2003年
/
139卷
关键词:
2000 Mathematics Subject Classification: 52A30;
Key words: Starshaped sets, paths of bounded length, starshaped via α-paths;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
Let S be a nonempty closed, simply connected set in the plane. For α > 0, let ℳ denote the family of all maximal subsets of S which are starshaped via paths of length at most α. Then ⋂{M : M in ℳ} is either starshaped via α-paths or empty. The result fails without the simple connectedness condition. However, even with a simple connectedness requirement, there is no Helly theorem for intersections of sets which are starshaped via α-paths.
机构:
Departamento de Matemática, Universidad de Buenos Aires, Ciudad UniversitariaDepartamento de Matemática, Universidad de Buenos Aires, Ciudad Universitaria
Toranzos F.A.
Cunto A.F.
论文数: 0引用数: 0
h-index: 0
机构:
Departamento de Matemática, Universidad de Buenos Aires, Ciudad UniversitariaDepartamento de Matemática, Universidad de Buenos Aires, Ciudad Universitaria
机构:
Univ Nacl La Plata, Fac Ciencias Exactas, Dept Matemat, La Plata, ArgentinaUniv Nacl La Plata, Fac Ciencias Exactas, Dept Matemat, La Plata, Argentina
Gutierrez, Marisa
Protti, Fabio
论文数: 0引用数: 0
h-index: 0
机构:
Univ Fed Fluminense, Inst Comput, Niteroi, BrazilUniv Nacl La Plata, Fac Ciencias Exactas, Dept Matemat, La Plata, Argentina
Protti, Fabio
Tondato, Silvia B.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Nacl La Plata, Fac Ciencias Exactas, Dept Matemat, La Plata, ArgentinaUniv Nacl La Plata, Fac Ciencias Exactas, Dept Matemat, La Plata, Argentina