The alternating and c-noncrossing face conjecture for prepolypositroids
The alternating and c-noncrossing face conjecture for prepolypositroids
Let be a Weyl group, let be a Coxeter element, and let be a generic simple -prepolypositroid. Let be the associated set of transformed roots, and let span a two-dimensional face of the normal fan of . Two roots are alternating when , and they are -noncrossing when either or .
Alternating and c-noncrossing face conjecture. If span a two-dimensional face of the normal fan of , then must be alternating and -noncrossing.
This conjecture predicts a necessary combinatorial condition on pairs of roots associated with two-dimensional faces of normal fans of generic simple -prepolypositroids. The supplied text gives no resolution status.
Sources & referencesView supporting material
Primary source
Thomas Lam and Alexander Postnikov, “Polypositroids”, arXiv:2010.07120 (2020).
Progress summary
Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.
Solutions 0
Sign in to submit a solution.
No solutions have been posted yet.