Alt-Text: There was a schism in 2007, when a sect advocating OpenOffice created a fork of Sunday.xlsx and maintained it independently for several months. The efforts to reconcile the conflicting schedules led to the reinvention, within the cells of the spreadsheet, of modern version control.
(Surprisingly often, mismatches in the family trios told the researchers that the fathers listed by the zoos were unrelated to the babies. Zoo representatives would often shrug at this news and say there might have been two males in the cage. “Yeah, well, the other one is the winner,” Bergeron would joke.)
Article published last week in Quanta Magazine on the famous Four Color Problem of Graph Theory.
“It requires four colors to color West Virginia, Pennsylvania, Ohio, Kentucky, Virginia and Maryland — three for West Virginia’s neighbors and a fourth for West Virginia itself.”