activity
20182026
most citedSign non-reversal property for totally non-negative and totally positive matrices, and testing total positivity of their interval hull

7 citations · 17 across the 21 of their papers we have counts for

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Showing 2024Show all

2 papers · 1 filter

math.RA2024

Constructing strictly sign regular matrices of all sizes and sign patterns

Projesh Nath Choudhury, Shivangi Yadav

The class of strictly sign regular (SSR) matrices has been extensively studied by many authors over the past century, notably by Schoenberg, Motzkin, Gantmacher, and Krein. A class…

math.FA2024

Sign regularity preserving linear operators

Projesh Nath Choudhury, Shivangi Yadav

A matrix is strictly sign regular/SSR (or sign regular/SR) if for each , all (non-zero) minors of have the…