Four color theorem in practice in the street. Cracked pavement bits painted in 4 colors to draw attention of the authorities it needs repairing.
Four color theorem: any pattern of irregular shapes can be colored with only four colors so that no two adjacent pieces are the same color.
June 21st, 2020
Viewed 577 Times - Last Visitor from Kiez, 12 - Germany on 09/27/2022 at 6:24 AM