2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/75992A rainbow subgraph of an edge-coloured graph has all edges of distinct colours. A random d-regular graph with d even, and having edges coloured randomly with d/2 of each of n colours, has a rainbow Hamilton cycle with probability tending to 1 as n tends to infinity, provided d is at least 8.16 pagesCombinatoricsProbability05C80 (Primary); 05C15, 05C45, 60C05 (Secondary)text