Grad student talk: “A first look at percolation theory”
Автор: Stony Brook University Math Club
Загружено: 2023-08-15
Просмотров: 2006
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Speaker: Kurt Butler
Date: February 23rd, 2023
Abstract: Imagine an infinite forest that is organized like a giant chess board. For each square of the board, there is a probability p that a tree occupies that square. If a bad actor ignites one of the trees, we want to understand how big the forest fire will become, assuming that the fire can only spread to trees on adjacent squares. When p is greater than 0.5, there almost-surely exists an infinitely large cluster of trees, and so igniting one of these trees can produce an infinitely large fire. If p is less than 0.5, an infinite forest fire is almost-surely impossible. What is it about this model that makes the p is greater than 0.5 and p is less than 0.5 cases so different?
This talk will be a friendly introduction to the percolation model. This model is well-studied in probability theory and leads to lots of interesting problems to think about, but their solutions often require clever mathematics and some fun pictures.
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