Title: Arithmetic on hyperelliptic Jacobians and singular curves
Abstract: Mumford representation encodes each divisor class in the Jacobian of a nonsingular hyperelliptic curve as a unique pair of polynomials. And Cantor’s Algorithm provides an implementation of the addition of two divisor classes in this setting. In my thesis, I extended these ideas to study the arithmetic on Jacobians of…
Title: Admmissible sets for Erdos sieves
Abstract: When considering a set of pairwise coprime numbers b_1,b_2,... the admissible sets, those which don't contain every congruence class mod b_i for any i, correspond to the closure of the shift {F+n} with n an integer and F those numbers not divisible by any b_i. When considering a generalization for Erdos sieves, this does not hold anymore. In this…
Title: Additive combinatorics and descent
Abstract: In this talk I will outline a method introduced in joint work with Peter Koymans that allowed us to settle Hilbert 10th problem for all finitely generated rings and to show that every number field has an elliptic curve of rank 1. I will also present joint work with Alexandra Shlapentokh outlining some further consequences of these results and…
Title: Linear Disjointness, Relativised Cyclotomic Polynomials and Inflated G-extensions for Number Fields
Abstract: There had been many attempts to generalize cyclotomic polynomials by many authors: combinatorialapproach using MOebius Inversion, Number-Theoretic approacj=h by focussing on unitary divisors etc. Our approach takes the factorization of X^n-1 as the model and defines cyclotomic…
