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SIAMDM
2010
130views more  SIAMDM 2010»
15 years 5 months ago
On the Hull Number of Triangle-Free Graphs
A set of vertices C in a graph is convex if it contains all vertices which lie on shortest paths between vertices in C. The convex hull of a set of vertices S is the smallest conve...
Mitre Costa Dourado, Fábio Protti, Dieter R...
APN
2009
Springer
16 years 1 months ago
Hasse Diagram Generators and Petri Nets
In [LJ06] Lorenz and Juh´as raised the question of whether there exists a suitable formalism for the representation of infinite families of partial orders generated by Petri nets...
Mateus de Oliveira Oliveira
DMTCS
2010
146views Mathematics» more  DMTCS 2010»
15 years 4 months ago
Tight Bounds for Delay-Sensitive Aggregation
This paper studies the fundamental trade-off between communication cost and delay cost arising in various contexts such as control message aggregation or organization theory. An o...
Yvonne Anne Pignolet, Stefan Schmid, Roger Wattenh...
DM
2011
238views Education» more  DM 2011»
15 years 1 months ago
A combinatorial approach to height sequences in finite partially ordered sets
Fix an element x of a finite partially ordered set P on n elements. Then let hi(x) be the number of linear extensions of P in which x is in position i, counting from the bottom. T...
Csaba Biró, William T. Trotter
IJACT
2010
67views more  IJACT 2010»
15 years 1 months ago
On message recognition protocols: recoverability and explicit confirmation
: We look at message recognition protocols (MRPs) and prove that there is a oneto-one correspondence between stateless non-interactive MRPs and digital signature schemes. Next, we ...
Ian Goldberg, Atefeh Mashatan, Douglas R. Stinson