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- Harvey L. Abbott, Denis Hanson
- Discrete Mathematics
- 1975

- Harvey L. Abbott, Meir Katchalski
- Discrete Mathematics
- 1979

We consider in this paper an interval graph analogue of Turin’s theorem in extremal graph theory. We first mention brieiiy some notation and terminology. The graphs to be discussed are ail finite and without multiple edges or loops. E(G) and V(G) denote the sets of edges and vertices of a graph G. K,, denotes the complete graph on n vertices. A cycle is a… (More)

- H L Abbott, P Erdős, And D Hanson
- 2004

He conjectured that N(t) = 0(1) but pointed out that this conjecture, if it is in fact true, is perhaps very deep . In [1] and [5], Singmaster points out that N(t) = 6 for the following values of t <_ 248 ; t = 120, 210, 1540, 7140, 11628 and 24310 . It has been shown by Singmaster [5] and D . Lind [6] that N(t) >_ 6 inflaitely often . Singmaster has… (More)

- Harvey L. Abbott, A. C. Liu
- Discrete Mathematics
- 1975

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