The research activities of this group mainly regard Combinatorics on Words and its generalizations to the bidimensional case and to trees and on Stringology. The Stringology researches concern algorithms on strings that range from string matching algorithms to Data Compression to some applications to bioinformatics. The group members are Professor Filippo Mignosi and the Ph.D. student Sara Pompei. The scientific productivity of this small group is relevant. Professor Mignosi is actually enrolled, as external and senior member, in the Palermo research equipe directed by Professor A. Restivo (who is also the national coordinator) of the PRIN Project 2011 (36 months starting from february 2013) "Automata and Formal Languages: Mathematical and Application Studies"