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The Mumford-Tate conjecture is first proved for CM abelian varieties by H. Pohlmann [Ann. Math., 1968]. In this note we give another proof of this result and extend it to CM motives.

Number Theory · Mathematics 2014-10-30 Chia-Fu Yu

We prove the Mumford-Tate conjecture for those abelian varieties over number fields, whose simple factors of their adjoint Mumford-Tate groups have over $\dbR$ certain (products of) non-compact factors. In particular, we prove this…

Number Theory · Mathematics 2007-05-23 Adrian Vasiu

We prove that the geometric Bogomolov conjecture for any abelian varieties is reduced to that for nowhere degenerate abelian varieties with trivial trace. In particular, the geometric Bogomolov conjecture holds for abelian varieties whose…

Algebraic Geometry · Mathematics 2016-12-06 Kazuhiko Yamaki

In this short article we provide a proof of the Iitaka conjecture for algebraic fiber spaces over abelian varieties.

Algebraic Geometry · Mathematics 2016-08-04 Junyan Cao , Mihai Paun

We prove the Kawamata-Morrison cone conjecture for Q-factorial terminal projective primitive symplectic varieties with second Betti number greater than five defined over a field of characteristic zero. As an application, we prove that the…

Algebraic Geometry · Mathematics 2026-05-12 Aurélien Faucher

We prove the 'hybrid conjecture' which is a common generalisation of the Andre\'e-Oort conjecture and the Andr\'e-Pink-Zannier conjecture, in the case of Shimura varieties of abelian type.

Number Theory · Mathematics 2024-07-08 Rodolphe Richard , Andrei Yafaev

Let K be a number field and A an abelian variety over K. We are interested in the following conjecture of Morita: if the Mumford-Tate group of A does not contain unipotent Q-rational points then A has potentially good reduction at any…

Number Theory · Mathematics 2007-05-23 Frederic Paugam

We study the Fibered Isomorphism Conjecture of Farrell and Jones in L-theory for groups acting on trees. In several cases we prove the conjecture. This includes wreath products of abelian groups and free metabelian groups. We also deduce…

K-Theory and Homology · Mathematics 2012-04-30 S. K. Roushon

We give a uniform bound on the degree of the maximal torsion cosets for subvarieties of an abelian variety. The proof combines algebraic interpolation and a theorem of Serre on homotheties in the Galois representation associated to the…

Number Theory · Mathematics 2017-10-13 Aurélien Galateau , César Martínez

We prove the Mumford--Tate conjecture for those abelian varieties over number fields whose extensions to C have attached adjoint Shimura varieties that are products of simple, adjoint Shimura varieties of certain Shimura types. In…

Number Theory · Mathematics 2008-08-26 Adrian Vasiu

We prove Kawaguchi-Silverman conjecture (KSC) and Shibata's conjecture on ample canonical heights for endomorphisms on several classes of algebraic varieties including varieties of Fano type and projective toric varieties. We also prove KSC…

Algebraic Geometry · Mathematics 2020-08-04 Yohsuke Matsuzawa

In this article, we prove that the Zilber-Pink conjecture for abelian varieties over an arbitrary field of characteristic $0$ is implied by the same statement for abelian varieties over the algebraic numbers. More precisely, the conjecture…

Number Theory · Mathematics 2019-10-18 Fabrizio Barroero , Gabriel Andreas Dill

We prove the real integral Hodge conjecture for several classes of real abelian threefolds. For instance, we prove the property for real abelian threefolds $A$ whose real locus $A(\mathbb R)$ is connected, and for real abelian threefolds…

Algebraic Geometry · Mathematics 2023-10-26 Olivier de Gaay Fortman

We deduce an analogue of the Bogomolov conjecture for non-degenerate subvarieties in fibered products of families of elliptic curves from the author's recent theorem on equidistribution in families of abelian varieties. This generalizes…

Number Theory · Mathematics 2022-10-20 Lars Kühne

In a recent paper, Moshe Jarden proposed a conjecture, later named the Kuykian conjecture, which states that if A is an abelian variety defined over a Hilbertian field K, then every intermediate field of K(A_{tor})/K is Hilbertian. We prove…

Number Theory · Mathematics 2012-02-01 Christopher Thornhill

We investigate the moduli theory of Calabi--Yau threefolds, and using Griffiths' work on the period map, we derive some finiteness results. In particular, we confirm a prediction of Morrison's Cone Conjecture.

alg-geom · Mathematics 2008-02-03 Balazs Szendroi

We study semistable reduction and torsion points of abelian varieties. In particular, we give necessary and sufficient conditions for an abelian variety to have semistable reduction. We also study N\'eron models of abelian varieties with…

alg-geom · Mathematics 2008-02-03 A. Silverberg , Yu. G. Zarhin

We prove an absolute Chow-Kuenneth decomposition for the motive of universal families A of abelian varieties over some compact Shimura surface. We furthermore prove the Hodge conjecture for general fibres of A, extending results of Ribet.

Algebraic Geometry · Mathematics 2008-02-22 Andrea Miller

This paper presents a proof of the monodromy conjecture for determinantal varieties. Our strategy centers on an in-depth analysis of monodromy zeta functions, leveraging a generalized A'Campo formula, an examination of multiple contact…

Algebraic Geometry · Mathematics 2025-10-31 Yifan Chen , Huaiqing Zuo

We prove a connexity theorem for abelian varieties in characteristic $0$: if $X$ is an abelian variety and $V\rightarrow X$ and $W\rightarrow X$ two morphisms, then, under certain hypotheses, the fiber product of $V$ and $W$ over $X$ is…

alg-geom · Mathematics 2008-02-03 Olivier Debarre