155 citations · 525 across the 43 of their papers we have counts for
3 papers · 1 filter
The polytope of Tesler matrices
Karola Mészáros, Alejandro H. Morales, Brendon Rhoades
We introduce the Tesler polytope Tes_n(a_1,a_2,...,a_n), whose integer points are the Tesler matrices of size n with nonnegative integer hook sums a_1,a_2,...,a_n. We show that Tes…
Combinatorics of diagrams of permutations
Joel Brewster Lewis, Alejandro H. Morales
There are numerous combinatorial objects associated to a Grassmannian permutation that index cells of the totally nonnegative Grassmannian. We study several of these objects…
New Dirac Delta function based methods with applications to perturbative expansions in quantum field theory
Achim Kempf, David M. Jackson, Alejandro H. Morales
We derive new all-purpose methods that involve the Dirac Delta distribution. Some of the new methods use derivatives in the argument of the Dirac Delta. We highlight potential aven…