Submission + - Mathematics (haaretz.com)
ArieKremen writes: A Russian immigrant mathematician-turned-nightwatchman-turned-mathematician has solved the Road Coloring problem, first posed in 1970 by Benjamin Weiss Roy Adler. The problem states that given a finite number of roads, one should be able to draw up a map, coded in various colors, that would lead to a certain destination regardless of the point of origin. The elusive problem remained unsolved for 38 years, until the immigrant mathematician Avraham Trakhtman found the solution. The problem has real-world implementation in message and traffic routing.
