Homepage of Xiaofa CHEN

How to reach me

Bâtiment Sophie Germain

5 Rue Thomas Mann

75205 Paris Cedex 13

Office: Room 752, 7-th floor

Representation theory of finite-dimensional algebras
Differential graded (=dg) categories and dg enhancements
Extriangulated categories, Quillen exact categories, Triangulated categories and derived categories
Cluster algebras, especially their categorifications
Homotopy theory and $\infty$-categories
$\tau-$tilting theory

Reading seminar on perverse sheaves, every Tuesday 4pm-6pm, in person in room 1013, Sophie Germain, 26/10/2021- 10/05/2022.
Discussion group on "Introduction to Derived Geometry", every Tuesday 2pm via Zoom, 20/04/2021- 06/04/2022.
Séminaire d'Algèbre, every Monday 2pm, in hybrid form.
Working group on clusters, quivers and geometry, every Friday from 2pm, currently reading the paper 'Fans and polytopes in tilting theory' by Toshitaka Aoki, Akihiro Higashitani, Osamu Iyama, Ryoichi Kase and Yuya Mizuno, via Zoom.
Learning seminar on higher category theory and applications in algebra and geometry, organised by Bernhard Keller and Gustavo Jasso, 13/04/2022-.
Learning seminar on Quantum Affine Algebras, with two introductory talks by Ryo Fujita, every Tuesday 4pm-6pm, in person in the Room 1013, Sophie Germain, 17/05/2022-.
Learning seminar on Bridgeland stability conditions, in Chinese, every Wednesday from 8:30am, via Tencent Meeting, 27/04/2022-.

Quiver mutation in Javascript and Java, developed by Prof. Bernhard Keller.
Cluster Algebras Portal, maintained by Sergey Fomin.
My English Translation of "Des Catégories Abéliennes" by Pierre Gabriel (Bull.SMF 1962). Note that English and French are not my first languages. I have made some adjustments, due to my lack of Tex skills and my laziness. If you have found typos or have some remarks, please send me an email.