Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Schumacher, R. U."'
The main contribution of this paper is a formula for the number of acyclic orientations of a complete bipartite, $K_{n_1,n_2},$ revealing that it is equal to the poly-Bernoulli number $B_{n_1}^{(-n_2)}$ introduced in 1997 by Kaneko. We also give a si
Externí odkaz:
http://arxiv.org/abs/1412.3685
Which graphs, in the class of all graphs with given numbers n and m of edges and vertices respectively, minimizes or maximizes the value of some graph parameter? In this paper we develop a technique which provides answers for several different parame
Externí odkaz:
http://arxiv.org/abs/1307.5781