STNB2018 (32è any)
Newforms and congruence graphs
Ponents
Samuele Anni
Resum
The theory of congruences of modular forms is a central topic in contemporary number theory, lying at the basis of the proof of Mazur's theorem on torsion in elliptic curves, Fermat's Last Theorem, and Sato-Tate, amongst others. Congruences are a display of the interplay between geometry and arithmetic. In order to study them, in a joint work with Vandita Patel (University of Toronto), we are constructing graphs encoding congruence relations between classical newforms. These graphs have extremely interesting features: they help our understanding on the structure of Hecke algebras, and they are also a new tool in the study of numerous conjectures. In this talk I will describe these new objects, show examples and explain some of the possible applications.
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