I was born in Rome on November 11, 1966.

I was an undergraduate student in  Mathematics at the Dipartimento di Matematica "G. Castelnuovo" of the University of Rome "La Sapienza" (1985-1990) where I obtained my degree "Laurea in Matematica" with a thesis "Azione di gruppi mediante automorfismi dell'algebra di Cuntz di ordine infinito"  under the supervision of Professor Sergio Doplicher.

I was a graduate student at the Mathematics Department of UCLA (1990-1994) where I obtained an MS degree (1993) and a PhD in Mathematics (1994) with a dissertation "Approximately inner and centrally free commuting squares of type II_1 factors and their classification" under the supervision of Professor Sorin Popa.

I was a Postdoctoral fellow at the Section de Mathematiques de l'Universite' de Geneve (with Professors Pierre de la Harpe and Rostislav I. Grigorchuk) during the period 1994-1996 and a Collaborateur Scientifique at the Departement de Mathematiques de l'Universite' de Neuchatel (with Professor Alain Valette) during the academic year 1997-98.

For 3 years (1995-98) I was Assistant Professor ("Ricercatore universitario") at the Dipartimento di Matematica of the Universita' dell''Aquila.

Since 1998 I am Associate Professor of Mathematical Analysis at the Dipartimento di Ingegneria of the Universita' del Sannio (Benevento).

In 2012 I obtained the national habilitation as a Full Professor of both Mathematical Analysis and Algebra & Geometry.

My Erdös number is 3, thanks to Wolfgang Woess and/or Gabor Elek.

You can look at my mathematical genealogy.

- Harmonic Analysis on Groups
         - Representation theory of finite groups
         - Finite Gelfand pairs
         - Discrete potential theory
         - Random walks on groups and graphs

- Geometric and Combinatorial Group Theory
         - Asymptotic Group Theory (growth functions)
         - Amenability
         - Sofic groups
         - Cellular automata on groups

- Functional Analysis
         - Amenability and means on groups
         - Operator Algebras (C*-algebras, von Neumann algebras, subfactors)

- Ergodic Theory and Dynamical Systems
          - Ergodic theorems
         - Symbolic Dynamics and Cellular automata on groups
         - Topological Dynamics; entropy

- Probability Theory
         - Finite Markov chains
         - Random walks on groups and graphs
         - System Theory

- Theoretical Computer Science
         - Formal languages (regular languages, linear languages, context-free languages, languages associated with groups)
         - Cellular automata