activity
20072025
most citedOn the Selmer groups of abelian varieties over function fields of characteristic p>0

25 citations · 46 across the 13 of their papers we have counts for

collaborators

14 papers

math.NT2025

Multi-variable admissible distributions

Kengo Fukunaga, Tadashi Ochiai

The theory of admissible distributions over a weight-space of one-variable was studied by Amice--Vélu and played important roles in the cyclotomic Iwasawa theory of non-ordinary p-…

math.NT2025

Kato explicit reciprocity law for Siegel modular forms of weight

Francesco Lemma, Tadashi Ochiai

We extend Kato explicit reciprocity law, in the version written by Scholl, for a modular curve to a product of two modular curves. By embedding the product of two modular curves in…

math.NT2024

On the -adic -function and Iwasawa Main Conjecture for an Artin motive over a CM field

Takashi Hara, Tadashi Ochiai

For an algebraic Hecke character defined on a CM field of degree , Katz constructed a -adic -function of variables in his innovative paper published in…

math.NT2023★ 1 cited

A formal model of Coleman families and applications to Iwasawa invariants

Filippo Alberto Edoardo Nuccio Mortarino Majno Di Capriglio, Tadashi Ochiai, Jishnu Ray

For a given Coleman family of modular forms, we construct a formal modeland prove the existence of a family of Galois representations associated to the Colemanfamily. As an applica…

math.NT2019★ 3 cited

Control theorem and functional equation of Selmer groups over -adic Lie extensions

Somnath Jha, Tadashi Ochiai

Let us consider a -adic Lie extension of a number field which fits into the setting of non-commutative Iwasawa theory formulated by Coates-Fukaya-Kato-Sujatha-Venjakob. For…

math.NT2018★ 2 cited

Endoscopic congruences modulo adjoint -values for

Francesco Lemma, Tadashi Ochiai

We establish the existence of congruences between a fixed endoscopic cuspidal automorphic representation of of square-free conductor and stable cuspidal autom…