Steven N. Karp

activity

20152026

most citedSign variation, the Grassmannian, and total positivity

34 citations · 194 across the 17 of their papers we have counts for

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2 papers · 1 filter

math.CA2025

Zero-free sector of the Wronski map on the totally nonnegative Grassmannian

Steven N. Karp

A classical result states that if $f (z)$ is a polynomial of degree at most $n$ with nonnegative coefficients, then $f (z)$ has no zeros in the sector $∣ ar g (z) ∣ < \frac{π}{n}$ of the…

math.CO2025

Richardson tableaux and components of Springer fibers equal to Richardson varieties

Steven N. Karp, Martha E. Precup

Motivated by the study of Springer fibers and their totally nonnegative counterparts, we define a new subset of standard tableaux called Richardson tableaux. We characterize Richar…