25 Answers votes newest views recent 5Probability, that a graph G does not contain a cycle 13Complexity of random knot with vertices on sphere 17Which platonic solids can form a topological torus? 27Adjacency matrices of graphs 3Optimal knot placement for fitting piecewise-continuous linear functions to a nonlinear function 9Number of unique sortings of subset-sums 4Random products of projections: bounds on convergence rate? 19What is your favorite isomorphism? (2) 1Combining DAGs into an acyclic tournament 1Which came first: the Fibonacci Numbers or the Golden Ratio? 8How fast can the base-bumping function in Goodstein’s theorem grow? 2Minimally 2-vertex-connected graphs? 1Correlation in graph coloring 8Naturally occuring groups with cardinality greater than the reals. 4Sorting a binary matrix diagonal in polynomial time while preserving rows 1Cover time of weighted graphs 3A differential inclusion relating to the slope of a convex function 2Roulette probability 6When is an algebra of commuting matrices (contained in one) generated by a single matrix? 4Eigenvalues of A+B where A is symmetric positive definite and B is diagonal 2Math puzzles for dinner 7Lattice Stick Number vs. Stick Number of Knot 3Linear Algebra Proofs in Combinatorics? 4How to generate a net on a 8-dimensional sphere 1How to prove that a set of facets are all the facets of a convex polytope.