An Asymptotic Version of the Multigraph 1-Factorization Conjecture

We give a self-contained proof that for all positive integers $r$ and all $\epsilon > 0$, there is an integer $N = N(r, \epsilon)$ such that for all $n \ge N$ any regular multigraph of order $2n$ with multiplicity at most $r$ and degree at least $(1+\epsilon)rn$ is 1-factorizable. This generalizes results of Perkovi{\'c} and Reed, and Plantholt and Tipnis.