A degree sequence Hajnal-Szemerédi theorem

A degree sequence Hajnal-Szemerédi theorem
复制标题

A 度序列 Hajnal-Szemeredi 定理

DOI:
10.1016/j.jctb.2016.01.007
复制
发表时间:
2014
期刊:
J. Comb. Theory B
影响因子:
--
通讯作者:
Andrew Treglown
Andrew Treglown
中科院分区:
--
文献类型:
--
作者:
Andrew Treglown

文献摘要

参考文献

被引文献

相似文献

我们称图G是完美H-填充的,如果存在一组顶点不相交的H的副本,这些副本覆盖了图G中的所有顶点。开创性的Hajnal-Szemerédi定理[12]刻画了确保图G包含完美Kr-填充的最小度。Balogh、Kostochka和Treglown [4]提出了Hajnal-Szemerédi定理的一个度序列版本,如果它为真,则加强了Hajnal-Szemerédi定理。在本文中,我们渐进地证明了这个猜想。该领域的另一个基本结果是Alon-Yuster定理[3],它给出了一个最小度条件,该条件确保图包含任意图H的完美H-填充。我们通过回答Balogh,Kostochka和Treglown [4]关于图的度序列的另一个猜想,给出了这个结果的一个广泛的推广,这个猜想迫使一个完美的H-包装。我们还证明了一个关于有向图中完全传递竞赛填充的度序列结果。证明将规律性和吸收方法融为一体。
We say that a graph G has a perfect H-packing if there exists a set of vertex-disjoint copies of H which cover all the vertices in G. The seminal Hajnal–Szemerédi theorem [12] characterises the minimum degree that ensures a graph G contains a perfect K r-packing. Balogh, Kostochka and Treglown [4] proposed a degree sequence version of the Hajnal–Szemerédi theorem which, if true, gives a strengthening of the Hajnal–Szemerédi theorem. In this paper we prove this conjecture asymptotically. Another fundamental result in the area is the Alon–Yuster theorem [3] which gives a minimum degree condition that ensures a graph contains a perfect H-packing for an arbitrary graph H. We give a wide-reaching generalisation of this result by answering another conjecture of Balogh, Kostochka and Treglown [4] on the degree sequence of a graph that forces a perfect H-packing. We also prove a degree sequence result concerning perfect transitive tournament packings in directed graphs. The proofs blend together the regularity and absorbing methods.
DOI: 10.1007/s00493-009-2254-3
发表时间: 2006-03
期刊: Combinatorica
影响因子: 1.1
作者:
D. Kühn;Deryk Osthus
通讯作者: D. Kühn;Deryk Osthus