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CPC
2006
132views more  CPC 2006»
15 years 6 months ago
Duality in Infinite Graphs
The adaption of combinatorial duality to infinite graphs has been hampered by the fact that while cuts (or cocycles) can be infinite, cycles are finite. We show that these obstruc...
Henning Bruhn, Reinhard Diestel
FSS
2006
88views more  FSS 2006»
15 years 6 months ago
T-norm-based logics with an independent involutive negation
In this paper we investigate the addition of arbitrary independent involutive negations to t-norm based logics. We deal with several extensions of MTL and establish general comple...
Tommaso Flaminio, Enrico Marchioni
JCT
2006
51views more  JCT 2006»
15 years 6 months ago
Left cells containing a fully commutative element
Let W be a finite or an affine Coxeter group and Wc the set of all the fully commutative elements in W. For any left cell L of W containing some fully commutative element, our main...
Jian-Yi Shi
SIGACT
2008
103views more  SIGACT 2008»
15 years 6 months ago
Computational geometry column 50
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...
Joseph O'Rourke
SYNTHESE
2008
83views more  SYNTHESE 2008»
15 years 6 months ago
A relativistic Zeno effect
A Zenonian supertask involving an infinite number of identical colliding balls is generalized to include balls with different masses. Under the restriction that the total mass of a...
David Atkinson