Lorenzo Ciardo

Image of Lorenzo Ciardo
Room 1230
Visiting address Moltke Moes vei 35 Niels Henrik Abels hus 0851 OSLO
Postal address Postboks 1053 Blindern 0316 OSLO
Other affiliations Faculty of Mathematics and Natural Sciences (Student)


    Curriculum Vitae 


My research is focused on Matrix Theory and Combinatorics, and in particular on Spectral Graph Theory. This aims at studying properties of a graph by looking at the eigenvalues and eigenvectors of matrices such as the adjacency and Laplacian matrices.

Currently, my interests are focused on:

  • Kemeny's constant for Markov chains on undirected graphs (with Geir Dahl and Steve Kirkland);
  • spectra of adjacency and distance matrices for products of digraphs (with Minerva Catral, Leslie Hogben, and Carolyn Reinhart);
  • computationally efficient alternatives to the Perron value of bottleneck matrices (with Enide Andrade and Geir Dahl);
  • discrete convexity in graphs (with Geir Dahl).

I studied at the University of Turin, the University of Waterloo, and the University of Paderborn, where I wrote my Master's thesis in Lie Theory titled "Maass-Selberg operators for \(SL(n,\mathbb{R})\)".

Supervisor: Prof. Geir Dahl.



  • Catral, Minerva; Ciardo, Lorenzo; Hogben, Leslie & Reinhart, Carolyn (2020). Spectral theory of products of digraphs. arXiv:2003.03412 [math.CO].
  • Ciardo, Lorenzo; Dahl, Geir & Kirkland, Steve (2020). On Kemeny’s constant for trees with fixed order and diameter. arXiv:2003.08286 [math.CO].


Tags: Mathematics, Combinatorics, Matrix Theory, Spectral Graph Theory


View all works in Cristin

  • Dahl, Geir; Andrade, Enide & Ciardo, Lorenzo (2018). Combinatorial Perron Parameters and Trees.

View all works in Cristin

Published Dec. 11, 2017 10:26 AM - Last modified Apr. 3, 2020 5:05 PM

Research groups