ACC Seminar: Context Free Graphs and Their Transition Groups

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Department of Mathematical Sciences

Location: Zoom Only

Speaker: Francesco Matucci, Università degli Studi di Milano-Bicocca

Refreshments will be served at 4:00 PM in North Building, Room 316

ABSTRACT

The Chomsky hierarchy for groups is an attempt to classify groups from the point of view of languages. Successful steps of this classification include finite and virtually free groups, while the currently studied step is the one given by co-context-free groups. A conjecture of Lehnert characterizes these groups as those contained in Thompson's group V. In this talk, we define a new family of co-context-free groups and discuss examples and properties.

BIOGRAPHY

Portrait of Francesco Matucci

Francesco Matucci received his PhD from Cornell University under the direction of Kenneth Stephen Brown and Martin Dimitrov Kassabov. Professor Matucci's research interests include combinatorial, computational, and geometric group theory.

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Additional information is available at https://web.stevens.edu/algebraic/.

Zoom Link:

https://stevens.zoom.us/j/93228680142 (Password: ACC)