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ARSCOM
2005
13 years 9 months ago
2005
In [BabStein] Babson and Steingr
ENDM
2008
13 years 9 months ago
2008
We present a simple bijection between Baxter permutations of size n and plane bipolar orientations with n edges. This bijection translates several classical parameters of permutati...
ISAAC
2001
Springer
14 years 2 months ago
2001
Springer
We consider the problem of developing algorithms for the recognition of a fixed pattern within a permutation. These methods are based upon using a carefully chosen chain or tree ...
JCT
2010
13 years 8 months ago
2010
Abstract. We present bijections between four classes of combinatorial objects. Two of them, the class of unlabeled (2 + 2)-free posets and a certain class of involutions (or chord ...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
— In interference-limited wireless cellular systems, interference avoidance and interference averaging are widely adopted to combat co-channel interference. In different types of...