时间：2024年3月21日（周四）14:00-15:00

Time：14:00-15:00, Thursday, March 21, 2023

地点：西湖大学云谷校区E4-233

Venue: E4-233, Yungu Campus

主持人/Host：Thierry De Pauw, ITS

主讲人/Speaker: Nikita KALININ, Guangdong Technion Israel Institute of Technology

讲座主题/Title: Sandpiles on infinite domains

讲座摘要/Abstract: 

The sandpile model is an archetypical example of Self-Organized Criticality, an essential concept in condensed matter physics. Mathematically, this is a very simple cellular automaton exhibiting very complex behavior. However, it is mathematically tractable since sandpile possesses several mutually interconnected structures. The set of recurrent states of a sandpile on a given graph G forms an Abelian group; the elements of this group bijectively correspond to the set of spanning trees of G. In several different setups there exist scaling limits of sandpile objects.

I will show beautiful pictures, explain the properties of these structures on sandpiles for a finite graph, and discuss what and how they can be generalized to infinite graphs.