Breakthrough! There was exciting news in the mathematics world recently, when it was announced that Xingxing Yu, Yan Wang and Dawei He from Georgia Tech proved the Kelman-Seymour conjecture. The 120-page paper containing the proof has been posted to the preprint server arXiv. Given the length of the paper, it will take time for reviewers to verify it. We… Read More The Kelmans-Seymour conjecture explained