activity
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

collaborators

64 papers

math.DG2023

Delocalized eta invariants of the signature operator on G-proper manifolds

Paolo Piazza, Hessel Posthuma, Yanli Song +1

Let be a connected, linear real reductive group and let be a cocompact -proper manifold without boundary. We define delocalized eta invariants associated to a -inve…

math.SG2022

Symplectic Morse Theory and Witten Deformation

David Clausen, Xiang Tang, Li-Sheng Tseng

On symplectic manifolds, we introduce a Morse-type complex with elements generated by pairs of critical points of a Morse function. The differential of the complex consists of grad…

math.CV2022

Trace Formula of Semicommutators

Xiang Tang, Yi Wang, Dechao Zheng

For weighted Bergman spaces on the unit disk, we give trace formulas of semicommutators of Toeplitz operators with symbols. We generalize thi…

math.FA2022

Helton-Howe Trace, Connes-Chern character and Quantization

Xiang Tang, Yi Wang, Dechao Zheng

We study the Helton-Howe trace and the Connes-Chern character for Toeplitz operators on weighted Bergman spaces via the idea of quantization. We prove a local formula for the large…

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…