On graphs without cycles of length 0 modulo 4

Autor: Győri, Ervin, Li, Binlong, Salia, Nika, Tompkins, Casey, Varga, Kitti, Zhu, Manran
Rok vydání: 2023
Předmět:
Druh dokumentu: Working Paper
Popis: Bollob\'as proved that for every $k$ and $\ell$ such that $k\mathbb{Z}+\ell$ contains an even number, an $n$-vertex graph containing no cycle of length $\ell \bmod k$ can contain at most a linear number of edges. The precise (or asymptotic) value of the maximum number of edges in such a graph is known for very few pairs $\ell$ and $k$. In this work we precisely determine the maximum number of edges in a graph containing no cycle of length $0 \bmod 4$.
Databáze: arXiv