文摘
We study the distribution of the percolation time T of 2-neighbour bootstrap percolation on \([n]^2\) with initial set \(A\sim {\text {Bin}}([n]^2,p)\). We determine T up to a constant factor with high probability for all p above the critical probability for percolation, and to within a \(1+o(1)\) factor for a large range of p.