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Large cycles in graphs

โœ Scribed by J.A. Bondy


Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
485 KB
Volume
1
Category
Article
ISSN
0012-365X

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โœฆ Synopsis


Abstrtct. The paper i~ concerned with the existence of cycles of specified length in finite undirected graphs and with the question of how this depends on the numbers of vertit.ยขs and edges ~ ulje graph, In particular, a conjecture ofP. Erdiss that every graph of order n and size at least ](n 2-5n ยข ! 4i has a cycle of length n-! is proved. A lower bound for the cirt~zmterence of a non-separab~ graph in terms of its vertex degrees is also given.


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## Abstract Our main result is the following theorem. Let __k__โ€‰โ‰ฅโ€‰2 be an integer, __G__ be a graph of sufficiently large order __n__, and __ฮด__(__G__)โ€‰โ‰ฅโ€‰__n__/__k__. Then: __G__ contains a cycle of length __t__ for every even integer __t__โ€‰โˆˆโ€‰[4, __ฮด__(__G__)โ€‰+โ€‰1]. If __G__ is nonbipartite then