*All you need in this life is ignorance and confidence, and then success is sure.*

I am a Professor in the Department of Mathematical Sciences at University of Delaware. My research interests are spectral graph theory, algebraic combinatorics and their connections and applications to other areas of mathematics and science; here is my CioabaCVJuly24 (last updated in July 2024).

After undergraduate studies in mathematics and computer science at University of Bucharest, Romania, I obtained my Ph.D. in mathematics at Queenâ€™s University at Kingston, Canada in 2005. After postdocs at UC San Diego and University of Toronto, I started this position at University of Delaware (UD) in 2009. I have supervised or co-supervised 7 Ph.D. students, 4 M.Sc. students, 3 undergrad senior theses and over 25 research undergrad or high school students. I am currently supervising 3 Ph.D. students. I have written over 70 papers and 2 books:

A Bridge to Advanced Mathematics: From Natural to Complex Numbers, American Math Society, 2023, with Werner Linde,

and A First Course in Graph Theory and Combinatorics, Springer, 2nd edition 2022, with Ram Murty

I serve on the editorial board of several journals including Discrete Mathematics, Linear Algebra and its Applications and Electronic Journal of Linear Algebra and I have organized several conferences in discrete mathematics. My research is currently supported by NSF and has been supported by NSF, NSA, NSERC, Simons Foundation, IDex Bordeaux and Japan Society for Promotion of Science. My academic genealogy tree from 2017 is below