Seminar Event Detail


Student Combinatorics

Date:  Monday, February 12, 2018
Location:  3866 East Hall (4:00 PM to 5:00 PM)

Title:  Tropical grassmannians, tropical linear spaces, and valuated matroids

Abstract:   Just as the grassmannian parametrizes m-dimensional subspaces of a given vector space, the tropical grassmannian parametrizes analogous tropical objects. In the case m = 2, the tropical grassmannian has an especially nice interpretation as parametrizing phylogenetic trees. When m = 3 or more, the story is more complicated and is connected to the theory of valuated matroids, i.e. matroids coming from fields with valuation.

Files:


Speaker:  Harry Richman
Institution:  University of Michigan

Event Organizer:     

 

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