Recurrent words with constant Abelian complexity

Recursions for Excedance number in some permutations groups

Recursions, formulas, and graph-theoretic interpretations of ramified coverings of the sphere by surfaces of genus 0 and 1

Recursive calculation of effective resistances in distance-regular networks based on Bose-Mesner algebra and Christoffel-Darboux identity

Reduced chromatic graph cohomology

Reduced decompositions and commutation classes

Reduced Decompositions and Permutation Patterns

Reduced Divisors and Embeddings of Tropical Curves

Reduced Incidence algebras description of cobweb posets and KoDAGs

Reduced Kronecker coefficients and counter-examples to Mulmuley's strong saturation conjecture SH

Reduced Kronecker products which are multiplicity free or contain only few components

Reduction of $m$-Regular Noncrossing Partitions

Reduction of Rota's basis conjecture to a problem on three bases

Reductions of (v_3) configurations

Reductions of Young tableau bijections

Redundant generating functions in lattice path enumeration

Rees products and lexicographic shellability

Refined Asymptotics and Explicit Recurrences for the numbers of Young tableaux in the (k,l) hook for k+l less than six

Refined bounds on the number of connected components of sign conditions on a variety

Refined enumerations of alternating sign matrices: monotone (d,m)-trapezoids with prescribed top and bottom row