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Publications Influence

Geometry of orbit spaces of proper Lie groupoids

- M. Pflaum, H. Posthuma, X. Tang
- Mathematics
- 30 December 2010

In this paper, we study geometric properties of quotient spaces of proper Lie groupoids. First, we construct a natural stratification on such spaces using an extension of the slice theorem for proper… Expand

33 4- PDF

From double Lie groupoids to local Lie 2-groupoids

- R. A. Mehta, X. Tang
- Mathematics
- 18 December 2010

We apply the bar construction to the nerve of a double Lie groupoid to obtain a local Lie 2-groupoid. As an application, we recover Haefliger’s fundamental groupoid from the fundamental double… Expand

31 4- PDF

Noncommutative Poisson structures on orbifolds

- G. Halbout, X. Tang
- Mathematics
- 19 June 2006

Author(s): Halbout, Gilles; Tang, Xiang | Abstract: In this paper, we compute the Gerstenhaber bracket on the Hoch-schild cohomology of $C^\infty(M)\rtimes G$ for a finite group $G$ acting on a… Expand

27 3- PDF

Escitalopram attenuates β-amyloid-induced tau hyperphosphorylation in primary hippocampal neurons through the 5-HT1A receptor mediated Akt/GSK-3β pathway

- Yan-juan Wang, Q. Ren, +7 authors Z. Zhang
- Chemistry, Medicine
- Oncotarget
- 29 February 2016

Tau hyperphosphorylation is an important pathological feature of Alzheimer's disease (AD). To investigate whether escitalopram could inhibit amyloid-β (Aβ)-induced tau hyperphosphorylation and the… Expand

18 2- PDF

Spatial learning and memory impairments are associated with increased neuronal activity in 5XFAD mouse as measured by manganese-enhanced magnetic resonance imaging

Dysfunction of neuronal activity is a major and early contributor to cognitive impairment in Alzheimer's disease (AD). To investigate neuronal activity alterations at early stage of AD, we… Expand

15 2- PDF

Deformations of Orbifolds with Noncommutative Linear Poisson Structures

- G. Halbout, Jean-Michel Oudom, X. Tang
- Mathematics
- 2011

Let Γ be a finite group acting faithfully and linearly on a real vector space V . Let T(V^∗) (S(V^∗)) be the tensor (symmetric) algebra associated to V^∗ which has a natural Γ action. We study… Expand

18 2

Deformation quantization of pseudo-symplectic (Poisson) groupoids

- X. Tang
- Mathematics
- 19 May 2004

Abstract.We introduce a new kind of groupoid—a pseudo-étale groupoid, which provides many interesting examples of noncommutative Poisson algebras as defined by Block, Getzler, and Xu. Following the… Expand

43 2- PDF

Thermodynamics of the General Diffusion Process: Time-Reversibility and Entropy Production

We introduce an axiomatic thermodynamic theory for the general diffusion process and prove a theorem concerning entropy and irreversibility: the equivalence among time-reversibility, zero entropy… Expand

50 1

Magnetic resonance imaging relaxation time in Alzheimer’s disease

- X. Tang, F. Cai, Dongxue Ding, Lu-lu Zhang, Q. Fang
- Medicine
- Brain Research Bulletin
- 1 June 2018

The magnetic resonance imaging (MRI) relaxation time constants, T1 and T2, are sensitive to changes in brain tissue microstructure integrity. Quantitative T1 and T2 relaxation times have been… Expand

17 1

Hopfish algebras

- X. Tang, A. Weinstein, C. Zhu
- Mathematics
- 19 October 2005

We introduce a notion of “hopfish algebra” structure on an associative algebra, allowing the structure morphisms (coproduct, counit, antipode) to be bimodules rather than algebra homomorphisms. We… Expand

14 1- PDF