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Minicourse for Undergraduates: An Introduction to the Theory of Sandpiles

Modern Math Workshop 2015 October 28, 2015 - October 29, 2015

October 28, 2015 (01:00 PM PDT - 05:00 PM PDT)
Speaker(s): Luis David Garcia Puente (Colorado College)
Primary Mathematics Subject Classification No Primary AMS MSC
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Abstract

The sandpile model developed by Bak, Tang, and Wiesenfeld in 1987 is a mathematical model first used to exemplify the concept of self-organized criticality (SOC).  SOC is a property of certain dynamical systems that naturally evolve toward critical states and it is considered to be one of the mechanisms by which complexity arises in nature.  The abelian sandpile model introduced by Dhar in 1990 is a special class of sandpile model defined on a combinatorial graph whose dynamic structure is encoded in a finite abelian group known as the sandpile group.  This algebraic structure has played a central role in the study of diverse properties of the abelian sandpile model. Moreover, the sandpile group has also been an important object of study in several distinct areas of mathematics, including algebraic combinatorics, algebraic, tropical and arithmetic geometry, the theory of computation, and the study of pattern formation.

In this mini-course, we will give an introduction to the theory of sandpiles.  In particular, we will study the interactions between the combinatorics of the graph, the algebraic information of the sandpile group and the dynamics of the abelian sandpile model.

Prerequisites: One undergraduate course in linear algebra.

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