activity
20122023
most citedEquivariant indices of Spin-Dirac operators for proper moment maps

14 citations · 70 across the 24 of their papers we have counts for

collaborators
Showing math.SGShow all

10 papers · 1 filter

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.SG2019★ 2 cited

Geometric quantization of b-symplectic manifolds

Maxim Braverman, Yiannis Loizides, Yanli Song

We introduce a method of geometric quantization for compact -symplectic manifolds in terms of the index of an Atiyah-Patodi-Singer (APS) boundary value problem. We show further…

math.SG2018★ 2 cited

Norm-square localization and the quantization of Hamiltonian loop group spaces

Yiannis Loizides, Yanli Song

In an earlier article we introduced a new definition for the `quantization' of a Hamiltonian loop group space , involving the equivariant -index of a Dirac-type o…

math.SG2017★ 6 cited

Spinor modules for Hamiltonian loop group spaces

Yiannis Loizides, Eckhard Meinrenken, Yanli Song

Let be the loop group of a compact, connected Lie group . We show that the tangent bundle of any proper Hamiltonian -space has a natural completion $\over…

math.SG2015

On the Vergne conjecture

Peter Hochs, Yanli Song

Consider a Hamiltonian action by a compact Lie group on a possibly noncompact symplectic manifold. We give a short proof of a geometric formula for decomposition into irreducible r…

math.SG2015★ 9 cited

Dirac operators on quasi-Hamiltonian G-spaces

Yanli Song

We develop notions of twisted spinor bundle and twisted pre-quantum bundle on quasi-Hamiltonian G-spaces. The main result of this paper is that we construct a Dirac operator with i…

math.SG2014★ 2 cited

A K-homological approach to the quantization commutes with reduction problem

Yanli Song

Kasparov defined a distinguished K-homology fundamental class, so called the Dirac element. We prove a localization formula for the Dirac element in K-homology of crossed product o…

math.SG2012

Proper maps, bordism, and geometric quantization

Yanli Song

Let be a compact connected Lie group acting on a stable complex manifold with equivariant vector bundle . Besides, suppose is an equivariant map from to the Lie…