Sandpile System
Grid size80×80
Total chips0
Topplings0
Avalanche size0
ModeRandom
0 chips
1 chip
2 chips
3 chips
≥4 (toppling)
The abelian sandpile model on a grid has a remarkable identity element: a configuration that, when added to any stable configuration and stabilized, returns that same configuration. The identity is a fractal-like object revealing deep self-organized criticality. Chips topple when a site reaches height 4, distributing to neighbors.