Sompong Chuysurichay

collaborators

3 papers

math.NT2026

The local Dold congruence for Fibonacci and Lucas sequences

Sompong Chuysurichay, Sawian Jaidee, Chatchawan Panraksa +1

We discuss local properties of the classical Fibonacci and Lucas sequences, characterising in both cases those primes~ $p$ for which the~ $p$ -part satisfies the Dold congruences or i…

math.NT2026

Torsion and Positive Rank in an Elliptic Family Arising from Cubic 2-Cycles

Sompong Chuysurichay, Sawian Jaidee, Chatchawan Panraksa

We study the elliptic family $E_{t} : Y^{2} = X^{3} + 4 X^{2} + 16 t^{2}$ arising from rational $2$ -cycles of $x^{3} + b x + a$ . For every $t \in Q^{\times}$ , we prove that $P_{t} = (0, - 4 t)$ has infinite or…

math.DS2017

The Mapping Class Group of a Shift of Finite Type

Mike Boyle, Sompong Chuysurichay

We study the mapping class group of a nontrivial irreducible shift of finite type: the group of flow equivalences of its mapping torus modulo isotopy. This group plays for flow equ…