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 to other areas of mathematics and science; here is my CioabaCVSept10_25 (last updated in September 2025).
After undergraduate studies in mathematics and computer science at University of Bucharest, Romania, I obtained my Ph.D. in mathematics at Queen’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 8 Ph.D. students, 4 M.Sc. students, 3 undergrad senior theses and over 25 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 , Electronic Journal of Linear Algebra and Congressus Numerantium.
I have organized several conferences in discrete mathematics. My research is currently partially 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
