A simple combinatorial proof of Shapiro's Catalan convolution
A Simple Construction for the Barnes-Wall Lattices
A simple existence criterion for normal spanning trees in infinite graphs
A Simple Explicit Construction of an $n^{\Tilde{O}(\log n)}$-Ramsey Graph
A simple Havel-Hakimi type algorithm to realize graphical degree sequences of directed graphs
A simple linear-time algorithm for finding path-decompositions of small width
A simple model of trees for unicellular maps
A Simple Proof and Some Difficult Examples for Hindman's Theorem
A simple proof for folds on both sides in complexes of graph homomorphisms
A Simple Proof of a Conjecture of Simion
A Simple Proof of an Inequality Connecting the Alternating Number of Independent Sets and the Decycling Number
A simple proof of associativity and commutativity of LR-coefficients (or the hive ring)
A simple proof of Brown's diagonalizability theorem
A Simple Proof of Schmidt's Conjecture
A Simple Proof of the Aztec Diamond Theorem
A simple recurrence for covers of the sphere with branch points of arbitrary ramification
A simple reduction from a biased measure on the discrete cube to the uniform measure
A simple regularization of graphs
A Simple Regularization of Hypergraphs
A simple solution to the k-core problem