Torsion points on families of simple abelian surfaces and Pell's equation over polynomial rings (with an appendix by E. V. Flynn)

Masser, David, and Zannier, Umberto. "Torsion points on families of simple abelian surfaces and Pell's equation over polynomial rings (with an appendix by E. V. Flynn)." Journal of the European Mathematical Society 017.9 (2015): 2379-2416. <http://eudml.org/doc/277688>.

@article{Masser2015,
abstract = {In recent papers we proved a special case of a variant of Pink’s Conjecture for a variety inside a semiabelian scheme: namely for any curve inside anything isogenous to a product of two elliptic schemes. Here we go beyond the elliptic situation by settling the crucial case of any simple abelian surface scheme defined over the field of algebraic numbers, thus confirming an earlier conjecture of Shou-Wu Zhang. This is of particular relevance in the topic, also in view of very recent counterexamples by Bertrand. Furthermore there are applications to the study of Pell equations over polynomial rings; for example we deduce that there are at most finitely many complex $t$ for which there exist $A,B \ne 0$ in $\{\mathbb \{C\}\}[X]$ with $A^2 – DB^2 = 1$ for $D = X^6 + X + t$. We also consider equations $A^2 – DB^2 = c^\{\prime \}X + c$, where the situation is quite different.},
author = {Masser, David, Zannier, Umberto},
journal = {Journal of the European Mathematical Society},
keywords = {Torsion point; abelian surface scheme; Pell equation; Jacobian variety; Chabauty’s theorem; torsion point; abelian surface scheme; Pell equation; Jacobian variety; Chabauty's theorem},
language = {eng},
number = {9},
pages = {2379-2416},
publisher = {European Mathematical Society Publishing House},
title = {Torsion points on families of simple abelian surfaces and Pell's equation over polynomial rings (with an appendix by E. V. Flynn)},
url = {http://eudml.org/doc/277688},
volume = {017},
year = {2015},
}

TY - JOUR
AU - Masser, David
AU - Zannier, Umberto
TI - Torsion points on families of simple abelian surfaces and Pell's equation over polynomial rings (with an appendix by E. V. Flynn)
JO - Journal of the European Mathematical Society
PY - 2015
PB - European Mathematical Society Publishing House
VL - 017
IS - 9
SP - 2379
EP - 2416
AB - In recent papers we proved a special case of a variant of Pink’s Conjecture for a variety inside a semiabelian scheme: namely for any curve inside anything isogenous to a product of two elliptic schemes. Here we go beyond the elliptic situation by settling the crucial case of any simple abelian surface scheme defined over the field of algebraic numbers, thus confirming an earlier conjecture of Shou-Wu Zhang. This is of particular relevance in the topic, also in view of very recent counterexamples by Bertrand. Furthermore there are applications to the study of Pell equations over polynomial rings; for example we deduce that there are at most finitely many complex $t$ for which there exist $A,B \ne 0$ in ${\mathbb {C}}[X]$ with $A^2 – DB^2 = 1$ for $D = X^6 + X + t$. We also consider equations $A^2 – DB^2 = c^{\prime }X + c$, where the situation is quite different.
LA - eng
KW - Torsion point; abelian surface scheme; Pell equation; Jacobian variety; Chabauty’s theorem; torsion point; abelian surface scheme; Pell equation; Jacobian variety; Chabauty's theorem
UR - http://eudml.org/doc/277688
ER -