Y. Lam

activity

20202026

most citedGeneralized Bockstein maps and Massey products

5 citations · 9 across the 18 of their papers we have counts for

collaborators

Showing 2023Show all

3 papers · 1 filter

math.AG2023

On the locus of curves mapping to a fixed target

Yeuk Hay Joshua Lam, Federico Moretti, Giovanni Passeri

Suppose $Y$ is a smooth variety equipped with a top form. We prove a simple theorem giving a sharp lower bound on the geometric genus of a family of subvarieties of $Y$ , in terms o…

math.AG2023

Finite braid group orbits on $S L_{2}$ -character varieties

Yeuk Hay Joshua Lam, Aaron Landesman, Daniel Litt

Let X be a 2-sphere with n punctures. We classify all conjugacy classes of Zariski-dense representations $ρ : π_{1} (X) \to S L_{2} (C)$ with finite orbit under the mapping class…

math.AG2023

Frobenius trace fields of cohomologically rigid local systems

Raju Krishnamoorthy, Yeuk Hay Joshua Lam

Let $X / C$ be a smooth variety with simple normal crossings compactification $X ˉ$ , and let $L$ be an irreducible $Q_{ℓ}$ -local system on $X$ wit…

On the locus of curves mapping to a fixed target

Finite braid group orbits on SL2​-character varieties

Frobenius trace fields of cohomologically rigid local systems

Finite braid group orbits on $S L_{2}$ -character varieties