In this paper we introduce a notion of a regular expression over infinite alphabets and show that a language is definable by an infinite alphabet regular expression if and only if ...
This paper studies the on-demand broadcasting problem with deadlines. We give the first general upper bound and improve existing lower bounds on the com
Wun-Tat Chan, Tak Wah Lam, Hing-Fung Ting, Prudenc...
Abstract. An undirected graph G = (V, E) is the k-power of an undirected tree T = (V, E ) if (u, v) ∈ E iff u and v are connected by a path of length at most k in T. The tree T ...