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20132026
most citedRegular Graphs of Degree at most Four that Allow Two Distinct Eigenvalues

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math.RA2026

Semigroup automorphisms of total positivity

Projesh Nath Choudhury, Shaun Fallat, Chi-Kwong Li

Totally positive (TP) and totally nonnegative (TN) matrices connect to analysis, mechanics, and to dual canonical bases in reductive groups, by well-known works of Schoenberg, Gant…