On Vizing's edge colouring question
Résumé
Soon after his 1964 seminal paper on edge colouring, Vizing asked the following question: can an optimal edge colouring be reached from any given proper edge colouring through a series of Kempe changes? We answer this question in the affirmative for triangle-free graphs.
Origine | Fichiers produits par l'(les) auteur(s) |
---|