26 Answers votes newest views recent 5Discrete Morse theory and chess 3A notion of a ‘coarse’, parametrized dimension of an object, where the parameter determines how finely we can distinguish (say) a very thin rod from a line 9How many triangulations of the genus $g$ surface on $n$ vertices? 22Fixed point theorems 11Testing simplicial complexes for shellability 7Combinatorial distance between simplicial complexes 6Are there “geometrically nice” sets from which to construct coverings that admit “Vietoris-Rips like” approximations to the nerve? 5When polynomial f(x^2) can be factored as g(x)·g(-x) ? 4The terminology for a node’s number of in-links in weighted directed graph 5Financial Mathematics Books 8Algebraic Morse theory 7radius of tubular neighborhood 6Discrete Morse function from smooth one 7Is there a discrete Cerf theory? 9Tetris-like falling sticky disks 6Terminology Concerning Oriented Simplicial Complexes 10Raoul Bott’s quote on Morse Theory cited by Bestvina and Kahle: where is it from? 6Not especially famous, long-open problems which anyone can understand 5Inflate a simplex, change rows to make the rank n 8Is this graph known? 5Probability of zero in a random matrix 6How to get the largest subset of a set of sets of intervals with no overlapping intervals 13When (if ever) disclose your identity as a reviewer? 5Combinatorial Morse functions and random permutations 11Homological computations 14Taking “Zooming in on a point of a graph” seriously.