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20022011
most citedObservation of an anomalous positron abundance in the cosmic radiation

2.2k citations

Showing math.COShow all

9 papers · 1 filter

math.CO20093 cited

q-Analogs of some congruences involving Catalan numbers

Roberto Tauraso

We provide some variations on the Greene-Krammer's identity which involve q-Catalan numbers. Our method reveals a curious analogy between these new identities and some congruences…

math.CO20081 cited

Extended Formulations for Packing and Partitioning Orbitopes

Yuri Faenza, Volker Kaibel

We give compact extended formulations for the packing and partitioning orbitopes (with respect to the full symmetric group) described and analyzed in (Kaibel and Pfetsch, 2008). Th…

math.CO20073 cited

The Veronese Construction for Formal Power Series and Graded Algebras

Francesco Brenti, Volkmar Welker

Let be a sequence of complex numbers such that its generating series satisfies for some polynomial . For an…

math.CO20073 cited

Quasisymmetric functions and Kazhdan-Lusztig polynomials

Louis J. Billera, Francesco Brenti

We associate a quasisymmetric function to any Bruhat interval in a general Coxeter group. This association can be seen to be a morphism of Hopf algebras to the subalgebra of all pe…

math.CO20074 cited

Alternating subgroups of Coxeter groups

Francesco Brenti, Victor Reiner, Yuval Roichman

We study combinatorial properties of the alternating subgroup of a Coxeter group, using a presentation of it due to Bourbaki.

math.CO20062 cited

-Vectors of Barycentric Subdivisions

Francesco Brenti, Volkmar Welker

For a simplicial complex or more generally Boolean cell complex we study the behavior of the - and -vector under barycentric subdivision. We show that if has a non-ne…