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COMBINATORICS
2000
85views more  COMBINATORICS 2000»
13 years 7 months ago
Inequality Related to Vizing's Conjecture
Let (G) denote the domination number of a graph G and let G H denote the Cartesian product of graphs G and H. We prove that (G)(H) 2(G H) for all simple graphs G and H. 2000 Math...
W. Edwin Clark, Stephen Suen
COMBINATORICA
2008
88views more  COMBINATORICA 2008»
13 years 7 months ago
Geometric graphs with no two parallel edges
We give a simple proof for a theorem of Katchalski, Last, and Valtr, asserting that the maximum number of edges in a geometric graph G on n vertices with no pair of parallel edges...
Rom Pinchasi
CORR
2007
Springer
111views Education» more  CORR 2007»
13 years 7 months ago
Link Scheduling in STDMA Wireless Networks: A Line Graph Approach
—We consider point to point link scheduling in Spatial Time Division Multiple Access (STDMA) wireless networks under the physical interference model. We propose a novel link sche...
N. Praneeth Kumar, Ashutosh Deepak Gore, Abhay Kar...
DM
1998
73views more  DM 1998»
13 years 7 months ago
On constructing snakes in powers of complete graphs
We prove the conjecture of Abbott and Katchalski that for every m ≥ 2 there is a positive constant λm such that S(Kd mn) ≥ λmnd−1 S(Kd−1 m ) where S(Kd m) is the length o...
Jerzy Wojciechowski
CORR
2006
Springer
145views Education» more  CORR 2006»
13 years 7 months ago
Product Multicommodity Flow in Wireless Networks
We provide a tight approximate characterization of the n-dimensional product multicommodity flow (PMF) region for a wireless network of n nodes. Separate characterizations in term...
Ritesh Madan, Devavrat Shah, Olivier Lév&ec...