On Extremal Connectivity Properties of Unavoidable Matroids
β Scribed by Zhaoyang Wu
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 216 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0095-8956
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π SIMILAR VOLUMES
In this paper, we shall consider the following problem: up to duality, is a connected matroid reconstructible from its connectivity function? Cunningham conjectured that this question has an affirmative answer, but Seymour gave a counter-example for it. In the same paper, Seymour proved that a conne
An element e of a 3-connected matroid M is essential if neither the deletion M\e nor the contraction M/e is 3-connected. Tutte's Wheels and Whirls Theorem proves that the only 3-connected matroids in which every element is essential are the wheels and whirls. In this paper, we consider those 3-conne