Jishnu Ray

collaborators

2 papers

math.NT2026

On $μ$ -invariants and isogenies for abelian varieties over function fields

Sohan Ghosh, Jishnu Ray, Takashi Suzuki

We give several formulas for how Iwasawa $μ$ -invariants of abelian varieties over unramified $Z_{p}$ -extensions of function fields change under isogeny. These are analogue…

math.NT2025

Finiteness and cofiniteness of fine Selmer groups over function fields

Sohan Ghosh, Jishnu Ray, Takashi Suzuki

We prove that the dual fine Selmer group of an abelian variety over the unramified $Z_{p}$ -extension of a function field is finitely generated over $Z_{p}$ . This…

On μ-invariants and isogenies for abelian varieties over function fields

Finiteness and cofiniteness of fine Selmer groups over function fields

On $μ$ -invariants and isogenies for abelian varieties over function fields