Rainbow copies of spanning subgraphs
Combinatorics
2025-08-13 v3 Discrete Mathematics
Abstract
Let denote the space of -vertex edge coloured graphs, where each edge occurs independently with probability . The colour of each existing edge is chosen independently and uniformly at random from the set . We consider the threshold for the existence of rainbow colored copies of a spanning subgraph . We provide lower bounds on and sufficient to prove the existence of such copies w.h.p.
Keywords
Cite
@article{arxiv.2505.21290,
title = {Rainbow copies of spanning subgraphs},
author = {Colin Cooper and Alan Frieze},
journal= {arXiv preprint arXiv:2505.21290},
year = {2025}
}
Comments
There is a major error in the paper. The proof incorrectly estimates the number of colors required to get a rainbow copy. It really only gives a trivial estimate