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CORR
2008
Springer
101views Education» more  CORR 2008»
14 years 12 months ago
One useful logic that defines its own truth
Existential fixed point logic (EFPL) is a natural fit for some applications, and the purpose of this talk is to attract attention to EFPL. The logic is also interesting in its own ...
Andreas Blass, Yuri Gurevich
DAM
2008
67views more  DAM 2008»
14 years 12 months ago
On the variance of Shannon products of graphs
We study the combinatorial problem of finding an arrangement of distinct integers into the ddimensional N-cube so that the maximal variance of the numbers on each -dimensional sec...
József Balogh, Clifford D. Smyth
COMBINATORICS
2006
113views more  COMBINATORICS 2006»
14 years 12 months ago
Inversions Within Restricted Fillings of Young Tableaux
In this paper we study inversions within restricted fillings of Young tableaux. These restricted fillings are of interest because they describe geometric properties of certain sub...
Sarah Iveson
COMBINATORICS
2006
137views more  COMBINATORICS 2006»
14 years 12 months ago
Three-Letter-Pattern-Avoiding Permutations and Functional Equations
We present an algorithm for finding a system of recurrence relations for the number of permutations of length n that satisfy a certain set of conditions. A rewriting of these rela...
Ghassan Firro, Toufik Mansour
COMBINATORICS
2006
121views more  COMBINATORICS 2006»
14 years 12 months ago
Asymptotics for Incidence Matrix Classes
We define incidence matrices to be zero-one matrices with no zero rows or columns. We are interested in counting incidence matrices with a given number of ones, irrespective of th...
Peter J. Cameron, Thomas Prellberg, Dudley Stark