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arXiv · 1802.07700

A rainbow blow-up lemma

Stefan Glock·Felix Joos
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Abstract

We prove a rainbow version of the blow-up lemma of Koml\'os, S\'ark\"ozy and Szemer\'edi for $\mu n$-bounded edge colourings. This enables the systematic study of rainbow embeddings of bounded degree spanning subgraphs. As one application, we show how our blow-up lemma can be used to transfer the bandwidth theorem of B\"ottcher, Schacht and Taraz to the rainbow setting. It can also be employed as a tool beyond the setting of $\mu n$-bounded edge colourings. Kim, K\"uhn, Kupavskii and Osthus exploit this to prove several rainbow decomposition results. Our proof methods include the strategy of an alternative proof of the blow-up lemma given by R\"odl and Ruci\'nski, the switching method, and the partial resampling algorithm developed by Harris and Srinivasan.

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Stefan Glock, Felix Joos. 2018-02-21. A rainbow blow-up lemma. https://arxiv.org/abs/1802.07700

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