Pietro Paparella | Professor of Mathematics

On a conjecture concerning totally extremal ideal Perron similarities
E. J. Artemis and P. Paparella
arXiv preprint arXiv:2606.02865, 2026
[arXiv Link]
Character tables are ideal Perron similarities
D. Z. Gershnik, A. J. Lewis, and P. Paparella
J. Algebra, 694:782–800, 2026
[DOI Link]
Perron similarities and the nonnegative inverse eigenvalue problem
C. R. Johnson and P. Paparella
Trans. Amer. Math. Soc., 378: 8361–8389, 2025
[DOI Link]
The converse of the Cowling–Obrechkoff–Thron theorem
D. N. Munger and P. Paparella
Involve, 18(3):473–478, 2025
[DOI Link]
A matricial view of the Karpelevič theorem
C. R. Johnson and P. Paparella
Linear Algebra Appl., 520:1-15, 2017
[DOI Link]
Perron spectratopes and the real nonnegative inverse eigenvalue problem
C. R. Johnson and P. Paparella
Linear Algebra Appl., 493:281–300, 2016
[DOI Link]

Over an academic career spanning more than a dozen years, I have taught over a thousand students and actively collaborated on mathematical discovery with undergraduate mentees.

Current Research Focus: Investigating the nonnegative inverse eigenvalue problem via discrete geometry.
Mentees & Collaborators: Erica J. Artemis.