Transversals of d-Intervals
نویسندگان
چکیده
منابع مشابه
Minimum d-blockers and d-transversals in graphs
We consider a set V of elements and an optimization problem on V : the search for a maximum (or minimum) cardinality subset of V verifying a given property P. A d-transversal is a subset of V which intersects any optimum solution in at least d elements while a d-blocker is a subset of V whose removal deteriorates the value of an optimum solution by at least d. We present some general characteri...
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A (homogeneous) d-interval is a union of d closed intervals in the line. Using topological methods, Tardos and Kaiser proved that for any finite collection of d-intervals that contains no k + 1 pairwise disjoint members, there is a set of O(dk) points that intersects each member of the collection. Here we give a short, elementary proof of this result. A (homogeneous) d-interval is a union of d ...
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ژورنال
عنوان ژورنال: Discrete & Computational Geometry
سال: 1997
ISSN: 0179-5376
DOI: 10.1007/pl00009315