2018/06/19 by Projesh Nath Choudhury, Choudhury, Projesh Nath, M. Rajesh Kannan +4 · 1 citation
Computer Science · Engineering · Mathematics · #15A86 #15B48 #Advanced Topics in Algebra #FOS: Mathematics #Functional Analysis (math.FA) #Matrix Theory and Algorithms #graph theory and CDMA systems #math.FA #msc:15A86 #msc:15B48
paper · pdf · doi:10.48550/arxiv.1806.07168
arxiv created 2018/06/19 · openalex publication_date 2018/06/19 · arxiv updated 2018/06/20 · openalex created_date 2018/06/29 · openalex updated_date 2026/07/28
Semipositive matrices (matrices that map at least one nonnegative vector to a positive vector) and minimally semipositive matrices (semipositive matrices whose no column-deleted submatrix is semipositive) are well studied in matrix theory. In this short note, we study the structure of linear maps which preserve the set of all semipositive and minimal semipositive matrices.