Lorenzo Ciardo
Doctoral Research Fellow

Differential Equations and Computational Mathematics
Email
lorenzci@math.uio.no
Room
1230
Username
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)
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 "MaassSelberg operators for \(SL(n,\mathbb{R})\)".
Supervisor: Prof. Geir Dahl.
PREPRINTS:
 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].
TEACHING:
 MAT3100 Linear Optimization, Spring 2018  Spring 2019 (teaching assistant).
 Matrices and Graphs, Spring 2020 (lecturer).
Publications
 Ciardo, Lorenzo (2020). A Fiedler center for graphs generalizing the characteristic set. Linear Algebra and its Applications. ISSN 00243795. 584, s 197 220 . doi: 10.1016/j.laa.2019.09.015
 Ciardo, Lorenzo (2020). The Braess' paradox for pendent twins. Linear Algebra and its Applications. ISSN 00243795. 590, s 304 316 . doi: https://doi.org/10.1016/j.laa.2019.12.040 Full text in Research Archive.
 Ciardo, Lorenzo; Dahl, Geir & Kirkland, Steve (2020). On Kemeny's constant for trees with fixed order and diameter. Linear and multilinear algebra. ISSN 03081087.
 Andrade, Enide; Ciardo, Lorenzo & Dahl, Geir (2019). Combinatorial Perron Parameters for Trees. Linear Algebra and its Applications. ISSN 00243795. 566, s 138 166 . doi: 10.1016/j.laa.2018.12.028 Full text in Research Archive.
 Ciardo, Lorenzo (2019). A Fiedler center for graphs generalizing the characteristic set. Linear Algebra and its Applications. ISSN 00243795. 584, s 197 220 . doi: https://doi.org/10.1016/j.laa.2019.09.015 Full text in Research Archive.
 Dahl, Geir; Andrade, Enide & Ciardo, Lorenzo (2018). Combinatorial Perron Parameters and Trees.
Published Dec. 11, 2017 10:26 AM
 Last modified Apr. 3, 2020 5:05 PM