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math.CO2013
On Totally Positive Matrices and Geometric Incidences
Miriam Farber, Saurabh Ray, Shakhar Smorodinsky
A matrix is called totally positive if every minor of it is positive. Such matrices are well studied and have numerous applications in Mathematics and Computer Science. We study ho…
math.CO2013★ 1 cited
Equal Entries in Totally Positive Matrices
Miriam Farber, Mitchell Faulk, Charles R. Johnson +1
We show that the maximal number of equal entries in a totally positive (resp. totally nonsingular) matrix is (resp. )). Relationships with…