## Abstract We characterize all pairs of connected graphs {__X__, __Y__} such that each 3βconnected {__X__, __Y__}βfree graph is pancyclic. In particular, we show that if each of the graphs in such a pair {__X__, __Y__} has at least four vertices, then one of them is the claw __K__~1,3~, while the
Hamiltonicity and forbidden subgraphs in 4-connected graphs
β Scribed by Florian Pfender
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 121 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0364-9024
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β¦ Synopsis
Abstract
Let T be the line graph of the unique tree F on 8 vertices with degree sequence (3,3,3,1,1,1,1,1), i.e., T is a chain of three triangles. We show that every 4βconnected {T, K~1,3~}βfree graph has a hamiltonian cycle. Β© 2005 Wiley Periodicals, Inc. J Graph Theory 49: 262β272, 2005
π SIMILAR VOLUMES
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A subgraph H of a 3-connected finite graph G is called contractible if H is connected and G&V(H) is 2-connected. This work is concerned with a conjecture of McCuaig and Ota which states that for any given k there exists an f (k) such that any 3-connected graph on at least f (k) vertices possesses a
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Various Hamiltonian-like properties are investigated in the squares of connected graphs free of some set of forbidden subgraphs. The star K,+ the subdivision graph of &, and the subdivision graph of K1,3 minus an endvertex play central roles. In particular, we show that connected graphs free of the