COMBINATORICS
2016
10 years 1 months ago
2016
We introduce a new array of type D Eulerian numbers, different from that studied by Brenti, Chow and Hyatt. We find in particular the recurrence relation, Worpitzky formula and ...
COMBINATORICS
2016
10 years 1 months ago
2016
Abstract. In a seminal paper, De Loera et. al introduce the algorithm NulLA (Nullstellensatz Linear Algebra) and use it to measure the difficulty of determining if a graph is not 3...
COMBINATORICS
2016
10 years 1 months ago
2016
We determine the exact minimum -degree threshold for perfect matchings in k-uniform hypergraphs when the corresponding threshold for perfect fractional matchings is significantly ...
COMBINATORICS
2016
10 years 1 months ago
2016
In combinatorics on words, a word w over an alphabet Σ is said to avoid a pattern p over an alphabet ∆ if there is no factor f of w such that f = h(p) where h : ∆∗ → Σ...
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COGSR
2016
10 years 1 months ago
2016
: The concept of stigmergy has been used to analyze self-organizing activities in an ever-widening range of domains, including social insects, robotics, social media, and human soc...