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» Parameterizing by the Number of Numbers
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86
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GC
2006
Springer
15 years 1 months ago
Sub-Ramsey Numbers for Arithmetic Progressions
Maria Axenovich, Ryan Martin
103
Voted
IPL
2008
68views more  IPL 2008»
15 years 1 months ago
The hub number of a graph
A hub set in a graph G is a set U V (G) such that any two vertices outside U are connected by a path whose internal vertices lie in U. We prove that h(G) hc(G) c(G) h(G) + 1, ...
Tracy Grauman, Stephen G. Hartke, Adam Jobson, Bil...
COMBINATORICS
2007
74views more  COMBINATORICS 2007»
15 years 1 months ago
A Closed Formula for the Number of Convex Permutominoes
Filippo Disanto, Andrea Frosini, Renzo Pinzani, Si...
80
Voted
COMBINATORICS
2007
84views more  COMBINATORICS 2007»
15 years 1 months ago
A New Upper Bound on the Total Domination Number of a Graph
Michael A. Henning, Anders Yeo
IJBC
2006
83views more  IJBC 2006»
15 years 1 months ago
How Real are Real Numbers?
We discuss mathematical and physical arguments against continuity and in favor of discreteness, with particular emphasis on the ideas of Emile Borel (1871
Gregory J. Chaitin