The questions he asked are still pushing the frontiers of probability theory. And statistical physics. Many of these questions concern mathematical structures that have a phase transition. A sudden macroscopic change. like ice melting to water. Just as different materials have different melting points. Phase transitions of mathematical structures also vary. Schramm conjectured that the phase transition in a process called percolation can be estimated by using only a close-up view of the system
The word “percolation” originally referred to Phone Number List the movement of fluid through a porous medium, such as water flowing through coffee grounds or oil seeping through cracks in a rock. In 1957, the mathematicians Simon Ralph Broadbent and John Michael Hammersley developed a mathematical model of this physical process. In the decades since, this model has become an object of study in its own right. Mathematicians study percolation because it strikes an important balance: The setup is simple, but it exhibits complex and puzzling features.
Look Local See Global
In 1990, the mathematicians Geoffrey Grimmett BJB Directory and John Marstrand wondered. If it was possible to calculate a percolation threshold by only examining relatively small parts of a graph. They studied percolation on slabs. Which are square grids stacked on top of each other in layers. The number of layers is finite. But if you were to look at only part of the slab, narrowing your perspective, you would just assume it’s a three-dimensional grid — everything looks the same. Each slab has a percolation threshold, which changes depending on the number of layers in the slab.