Some coloring problems of graphs

An acyclic edge coloring of a graph G is a proper edge coloring with an additional condition that any pair of colors induces a linear forest (an acyclic graph with maximum degree

At the crossroad of Havel’s and Steinberg’s problems, Borodin and Raspaud [11] proved that every planar graph without 3-cycles at distance less than four and without 5-cycles

Note that the obtained coloring is legitimate, because in each case the other vertices adjacent to z ∗ received the color c.. Lemma 4.2 (Reducing two vertices connected by a

There exists δ > 0 such that every planar triangle-free graph of maximum degree at most four and without separating 4-cycles has fractional chromatic number at most 3 − δ.. Dvoˇr´

Presque tous les patients, particulièrement, ceux qui sont traités pour un cancer de la prostate sont d’un âge supérieur à 60 ans et ils présentent fréquemment des

En poussant plus loin le raisonnement et en prenant appui sur le fait que l’incidence majeure du choix d’une règle d’allocation ne concerne ni le fonctionnement courant du

The process suggested for implementation of these programs is developmental consultation which L described as involving the counsellor in: (a) increasing staff awareness of the

Two instruments were used to measure student growth: the Crites Vocational Maturity Inventory and the Secondary Self Concept Questionnaire developed by the North York Board