The existence of 1-factorizations of the complete multigraph λKnwhich cannot be decomposed into 1-factorizations with smaller λ is studied.
ASJC Scopus subject areas
Colbourn, C., Colbourn, M. J., & Rosa, A. (1985). Indecomposable 1-factorizations of the complete multigraph. Journal of the Australian Mathematical Society, 39(3), 334-343. https://doi.org/10.1017/S1446788700026100