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Higher reciprocity laws and ternary linear recurrences

Posted in
Speaker: 
Armand Noubissie
Zugehörigkeit: 
z. Z. MPIM
Datum: 
Mit, 22/12/2021 - 14:30 - 15:30
Parent event: 
Number theory lunch seminar

For zoom details contact Pieter Moree (moree@mpim-bonn.mpg.de)

 

Given an irreducible polynomial f(x) with integer coefficients a rule which for every prime p determines whether f(x) is the product of distinct linear factors is said to be a higher reciprocity law.
In the simplest cases this involves primes being in a union of arithmetic progressions. Beyond that it involves primes being represented by binary quadratic forms or p-th Fourier coefficients of modular forms having a certain value. Here we present such laws involving the value of u_{p-1} modulo p, with u_j the jth term of a highly specific ternary linear recurrence. The methods used to find them
rely on classical algebraic number theory and class field theory. (Joint work in progress with Pieter Moree.)

 

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