Lecture (webinar)
of the Sino  Russian Mathematics Center
«Logarithmic Rmap»
Lecturer  
Yongbin Ruan Professor, IAS of Zhejiang University 

Bio: Yongbin Ruan is a professor at IAS of Zhejiang University, currently. He is a world wellknown mathematician who was selected as an Academician of the Chinese Academy of Sciences since 2021. He works in the field of Symplicit Geometry and Mathematical Physics. Prof. Ruan was the founder of many famous theories in mathematics, like (orbifold) GromovWitten theory, relative GromovWitten theory, ChenRuan cohomology and FanJarvisRuanWitten theory. He has made a lot of contributions to the resolution of many famous conjectures, like Arnold conjecture, the generalized Witten conjecture and LG/CY correspondence conjectures. 
The fundamental object of GromovWitten theory is the notation of stable map to a target Kahler/Symplectic manifold.
In LG Amodel in physics, the target carries an additional $C^*$ action called Rcharge. It twisted the notation of map in socalled gauged linear sigma model. Furthermore, its moduli space is noncompact even with stability condition. In the talk, we will introduce the notation of $R$map. The effort to compactify it leads to the theory of Logarithmic Rmaps. This is a joint work with Qile Chen and Felix Janda.
The lecture will be held in English in the form of a webinar on the Zoom platform.
15:00  16:00 Beijing time（10:00  11:00 Moscow time)
Join Zoom Meeting:
https://us02web.zoom.us/j/87337608631?pwd=TzhNOCt0eVVUUkQ4c3FPQVFScEk5UT09
Meeting ID：873 3760 8631
Passcode：061228
Lecture recording
https://rutube.ru/video/6574c24029590182bb0b459947117512/