Many combinatorial objects admit "signed" or more generally "colorful" versions. We introduce the multi-permutohedral fan as a tropical geometric object that one can use to deduce numerical properties about these "colorful" combinatorial objects. Joint works with Emily Clader, Chiara Damiolini, Alex Fink, Daoji Huang, Matt Larson, Shiyue Li, and Hunter Spink.
Speaker: Chris Eur
Institution: Harvard University
Webpage: https://people.math.harvard.edu/~ceur/
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