Counting restricted orientations of random graphs
Combinatorics
2020-01-01 v2
Abstract
We count orientations of avoiding certain classes of oriented graphs. In particular, we study , the number of orientations of the binomial random graph in which every copy of is transitive, and , the number of orientations of containing no strongly connected copy of . We give the correct order of growth of and up to polylogarithmic factors; for orientations with no cyclic triangle, this significantly improves a result of Allen, Kohayakawa, Mota and Parente. We also discuss the problem for a single forbidden oriented graph, and state a number of open problems and conjectures.
Keywords
Cite
@article{arxiv.1811.03080,
title = {Counting restricted orientations of random graphs},
author = {Maurício Collares and Yoshiharu Kohayakawa and Robert Morris and Guilherme Oliveira Mota},
journal= {arXiv preprint arXiv:1811.03080},
year = {2020}
}
Comments
16 pages + Appendix, 1 figure; minor changes