49 citations · 164 across the 34 of their papers we have counts for
4 papers · 1 filter
Geometric presentations for the pure braid group
Dan Margalit, Jon McCammond
We give several new positive finite presentations for the pure braid group that are easy to remember and simple in form. All of our presentations involve a metric on the punctured…
h-vectors of generalized associahedra and non-crossing partitions
Christos A. Athanasiadis, Thomas Brady, Jon McCammond +1
A case-free proof is given that the entries of the -vector of the cluster complex , associated by S. Fomin and A. Zelevinsky to a finite root system , count elements of…
The Euler characteristic of the Whitehead automorphism group of a free product
Craig Jensen, Jon McCammond, John Meier
A combinatorial summation identity over the lattice of labelled hypertrees is established that allows one to gain concrete information on the Euler characteristics of various autom…
Noncrossing partitions in surprising locations
Jon McCammond
Certain mathematical structures make a habit of reoccuring in the most diverse list of settings. Some obvious examples exhibiting this intrusive type of behavior include the Fibona…