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20022023
most citedThe impossibility of exactly flat non-trivial Chern bands in strictly local periodic tight binding models

83 citations · 297 across the 63 of their papers we have counts for

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Showing math.KTShow all

12 papers · 1 filter

math.KT2022

Primary and secondary invariants of Dirac operators on -proper manifolds

Paolo Piazza, Xiang Tang

In this article, we survey the recent constructions of cyclic cocycles on the Harish-Chandra Schwartz algebra of a connected real reductive Lie group and their applications to…

math.KT2022

Cartan Motion Group and Orbital Integrals

Yanli Song, Xiang Tang

In this short note, we study the variation of orbital integrals, as traces on the group algebra , under the deformation groupoid. We show that orbital integrals are continuous u…

math.KT2020

On the Hochschild homology of convolution algebras of proper Lie groupoids

Markus J. Pflaum, Hessel B. Posthuma, Xiang Tang

We study the Hochschild homology of the convolution algebra of a proper Lie groupoid by introducing a convolution sheaf over the space of orbits. We develop a localization result f…

math.KT2019★ 11 cited

Higher Orbit Integrals, Cyclic Cocyles, and K-theory of Reduced Group C*-algebra

Yanli Song, Xiang Tang

Let G be a connected real reductive group. Orbit integrals define traces on the group algebra of G. We introduce a construction of higher orbit integrals in the direction of higher…

math.KT2019★ 1 cited

Smooth Connes--Thom isomorphism, cyclic homology, and equivariant quantisation

Sayan Chakraborty, Xiang Tang, Yi-Jun Yao

Using a smooth version of the Connes--Thom isomorphism in Grensing's bivariant K-theory for locally convex algebras, we prove an equivariant version of the Connes--Thom isomorphism…

math.KT2012★ 4 cited

Hochschild Lefschetz Class for -modules

Ajay Ramadoss, Xiang Tang, Hsian-hua Tseng

We introduce a notion of Hochschild Lefschetz class for a good coherent D-module on a compact complex manifold, and prove that this class is compatible with the direct image functo…