Given a tournament score sequence s 1 s 2 } } } s n , we prove that there exists a tournament T on vertex set [1, 2, ..., n] such that the degree of any vertex i is s i and the subtournaments of T on both the even and the odd vertices are transitive in the given order. This means that i beats j when
Subdivisions of Transitive Tournaments
✍ Scribed by A.D. Scott
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 77 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0195-6698
No coin nor oath required. For personal study only.
✦ Synopsis
We prove that, for r ≥ 2 and n ≥ n(r ), every directed graph with n vertices and more edges than the r -partite Turán graph T (r, n) contains a subdivision of the transitive tournament on r + 1 vertices. Furthermore, the extremal graphs are the orientations of T (r, n) induced by orderings of the vertex classes.
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