The site percolation threshold of the square lattice
Find a closed form for the site percolation threshold of the square lattice, p_c ≈ 0.5927460508; bond percolation has p_c = 1/2.
Comparing changes
Choose two branches to see what changed, then open a pull request to bring the work across.
Pick two different branches
A pull request can go from any branch into any other.