activity
19922026
most citedStacky Hamiltonian actions and symplectic reduction

15 citations · 52 across the 24 of their papers we have counts for

collaborators

24 papers

math.SG2026

The shifted symplectic geometry of derived higher groupoids

Miquel Cueca, Florian Dorsch, Reyer Sjamaar +1

The main goal of this work is to introduce derived Lie n-groupoids and their shifted symplectic structures. We further define shifted lagrangian structures and prove that their com…

math.SG2022★ 3 cited

Symplectic reduction and a Darboux-Moser-Weinstein theorem for Lie algebroids

Yi Lin, Yiannis Loizides, Reyer Sjamaar +1

We extend the Marsden-Weinstein reduction theorem and the Darboux-Moser-Weinstein theorem to symplectic Lie algebroids. We also obtain a coisotropic embedding theorem for symplecti…

math.SG2022

Riemannian foliations and geometric quantization

Yi Lin, Yiannis Loizides, Reyer Sjamaar +1

We introduce geometric quantization for constant rank presymplectic structures with Riemannian null foliation and compact leaf closure space. We prove a quantization-commutes-with-…

math.SG2020★ 3 cited

Log symplectic manifolds and

Yi Lin, Yiannis Loizides, Reyer Sjamaar +1

We show, under an orientation hypothesis, that a log symplectic manifold with simple normal crossing singularities has a stable almost complex structure, and hence is Spin. In…

math.DG2020★ 3 cited

A Thom isomorphism in foliated de Rham theory

Yi Lin, Reyer Sjamaar

We prove a Thom isomorphism theorem for differential forms in the setting of transverse Lie algebra actions on foliated manifolds and foliated vector bundles.

math.SG2019★ 1 cited

The convexity package for Hamiltonian actions on conformal symplectic manifolds

Youming Chen, Reyer Sjamaar, Xiangdong Yang

Consider a Hamiltonian action of a compact connected Lie group on a conformal symplectic manifold. We prove a convexity theorem for the moment map under the assumption that the act…