Ludvig Modin

works on

moduli spaces 1 obstructions 1 separatedness 1 stable curves 1 stack theory 1

From the 1 of 3 linked papers with an AI index.

collaborators

3 papers

math.AG2026

Obstructions to the existence of good moduli spaces of $A_{r}$ -stable curves

Davide Gori, Ludvig Modin, Michele Pernice

The paper investigates why certain open substacks of the moduli stack of A_r‑stable curves fail to have separated good moduli spaces, and constructs a maximal open substack that do…

math.AG2026

The local geometry of the stack of $A_{r}$ -stable curves

Davide Gori, Ludvig Modin, Michele Pernice

In this paper we study the local geometry of the stack of pointed $A_{r}$ -stable curves. In particular, we analyze the deformation theory of $A_{r}$ -stable curves and their automorphis…

math.AG2025

Moduli spaces for $I^$ -strata and non-reductive quotients

Ludvig Modin

We give a new proof of the $U^$ -theorem of BÃ©rczi, Doran, Hawes and Kirwan on the existence of geometric quotients for actions of graded unipotent groups in terms of stacks o…

Obstructions to the existence of good moduli spaces of Ar​-stable curves

The local geometry of the stack of Ar​-stable curves

Moduli spaces for I^-strata and non-reductive quotients

Obstructions to the existence of good moduli spaces of $A_{r}$ -stable curves

The local geometry of the stack of $A_{r}$ -stable curves

Moduli spaces for $I^$ -strata and non-reductive quotients