A combinatorial proof of the log-concavity of the numbers of permutations with $k$ runs
A combinatorial proof of the Removal Lemma for Groups
A combinatorial proof of the Rogers-Ramanujan and Schur identities
A combinatorial realization of Schur-Weyl duality via crystal graphs and dual equivalence graphs
A combinatorial reciprocity theorem for hyperplane arrangements
A combinatorial solution to LIMO 2010 question 10
A combinatorial study of multiplexes and ordinary polytopes
A combinatorial survey of identities for the double factorial
A combinatorial version of Sylvester's four-point problem
A Combinatorial, Strongly Polynomial-Time Algorithm for Minimizing Submodular Functions
A Combined Logarithmic Bound on the Chromatic Index of a Multigraph
A comment on Ryser's conjecture for intersecting hypergraphs
A comment to: On 3-colorable planar graphs without short cycles
A common formula for certain generalized Hankel transforms
A common recursion for Laplacians of matroids and shifted simplicial complexes
A commutative algebra on degenerate CP^1 and Macdonald polynomials
A Comparison Of Two Methods For Random Labelling of Balls by Vectors of Integers
A Comparison of Two Proximity Catch Digraph Families in Testing Spatial Clustering
A comparison of Vassiliev and Ziegler-Zivaljevic models for homotopy types of subspace arrangements
A comparison theorem for $f$-vectors of simplicial polytopes