This note presents necessary and sufficient conditions for parallel and constant time conversions from one digit-set into another, and thus also for constant time addition. In the...
Two long-open problems have been solved: (1) every sufficiently large planar point set in general position contains the vertices of an empty hexagon; (2) every finite collection o...
— A facility location problem deals with locating the best place for a group of facilities, among distinct demand points, minimizing a certain locational optimization function. I...
Abstract. Many important problems in bioinformatics and genetics require analyses that are NP-complete. For example, one of the basic problems facing researchers that analyze pedig...
Panagiotis Manolios, Marc Galceran Oms, Sergi Oliv...
This paper investigates the word problem for inverse monoids generated by a set Γ subject to relations of the form e = f, where e and f are both idempotents in the free inverse m...