A refinement of the Cameron-Erdős Conjecture
A Refinement of the Eulerian Numbers, and the Joint Distribution of $π(1)$ and Des($π$) in $S_n$
A refinement of weak order intervals into distributive lattices
A regularity lemma and twins in words
A relation between number of integral points, volumes of faces and degree of the discriminant of smooth lattice polytopes
A relation between the shape of a permutation and the shape of the base poset derived from the Lehmer codes
A Relation for Domino Robinson-Schensted Algorithms
A relationship between the diameter and the intersection number c2 for a distance-regular graph
A relationship between two graphical models of the Kauffman polynomial
A Relative Laplacian spectral recursion
A remark on B_3 sequences
A remark on some bases in the Hecke algebra
A Remark on Triangle-Critical Graphs
A removal lemma for linear configurations in subsets of the circle
A Removal Lemma for Systems of Linear Equations over Finite Fields
A Residue Theorem for Malcev-Neumann Series
A residue theorem for rational trigonometric sums and Verlinde's formula
A restriction of Euclid
A Riemann-Roch theorem in tropical geometry
A Salvetti complex for Toric Arrangements and its fundamental group