activity
20182026
most citedTransverse lines to surfaces over finite fields

8 citations · 17 across the 12 of their papers we have counts for

collaborators

13 papers

math.NT2026

On the generalization of Christol's theorem to domains of finite type over finite fields

Lian Duan, Chunlin Wang

We generalize Christol's theorem---which characterizes algebraic power series over a finite field in terms of automatic coefficient sequences---to completions of domains of finite…

math.AG2026

A geometric approach to the density of rank-metric codes

Shamil Asgarli, Lian Duan, Nathan Kaplan +1

We study the asymptotic density of -point-free linear sections of geometrically irreducible projective varieties over finite fields. We then apply these results to ra…

math.NT2026

Galois representation of the product of two Drinfeld modules of generic characteristic

Lian Duan, Jiangxue Fang

In this paper, we study the Galois representations attached to products of Drinfeld modules. As a function-field analogue of Serre's classical open image theorem for products of el…

math.NT2023

On the essential torsion finiteness of abelian varieties over torsion fields

Jeff Achter, Lian Duan, Xiyuan Wang

The classical Mordell-Weil theorem implies that an abelian variety over a number field has only finitely many -rational torsion points. This finitude of torsion still ho…

math.AG2022★ 1 cited

Frobenius nonclassical hypersurfaces

Shamil Asgarli, Lian Duan, Kuan-Wen Lai

A smooth hypersurface over a finite field is called Frobenius nonclassical if the image of every geometric point under the -th Frobenius endomorphism remains in t…

math.NT2021

Nonsplitting of the Hilbert exact sequence and the principal Chebotarev density theorem

Lian Duan, Kelly Emmrich, Ning Ma +1

Let be a finite Galois extension of number fields, and let be the Hilbert class field of . We find a way to verify the nonsplitting of the short exact sequence $$1\t…

math.NT2021★ 2 cited

Generalizations of Alladi's formula for arithmetical semigroups

Lian Duan, Ning Ma, Shaoyun Yi

In this article, we prove that a general version of Alladi's formula with Dirichlet convolution holds for arithmetical semigroups satisfying Axiom or Axiom . As applica…

math.NT2020★ 5 cited

Analogues of Alladi's formula over global function fields

Lian Duan, Biao Wang, Shaoyun Yi

In this paper, we show an analogue of Kural, McDonald and Sah's result on Alladi's formula for global function fields. Explicitly, we show that for a global function field , if…

math.AG2020

Transverse linear subspaces to hypersurfaces over finite fields

Shamil Asgarli, Lian Duan, Kuan-Wen Lai

Ballico proved that a smooth projective variety of degree over a finite field of elements admits a smooth hyperplane section if . In this paper,…

math.NT2020

Irreducibility of geometric Galois representations and the Tate conjecture for a family of elliptic surfaces

Lian Duan, Xiyuan Wang

Using Calegari's result on the Fontaine-Mazur conjecture, we study the irreducibility of pure, regular, rank 3 weakly compatible systems of self-dual l-adic representations. As a c…

math.NT2019

Faltings Serre method on three dimensional selfdual representations

Lian Duan

We prove that a selfdual -Galois representation constructed by van Geemen and Top is isomorphic to a quadratic twist of the symmetric square of the Tate module of an elliptic…

math.AG2019★ 8 cited

Transverse lines to surfaces over finite fields

Shamil Asgarli, Lian Duan, Kuan-Wen Lai

We prove that if is a smooth reflexive surface in defined over a finite field , then there exists an -line meeting transversely p…

math.NT2018★ 1 cited

Galois action on the Neron-Severi group of Dwork surfaces

Lian Duan

We study the Galois action attached to the Dwrok surfaces with parameter in a number field . We show that when has geome…