graph-theory
https://www.xomnia.com/post/graph-theory-and-its-uses-with-examples-of-real-life-problems/ Numberphile: A breakthrough in graph theory https://www.youtube.com/watch?v=Tnu_Ws7Llo4 And visit her website: http://www.ericaklarreich.com/ Read Erica Klarreich’s Quanta article on this subject: https://www.quantamagazine.org/mathematician-disproves-hedetniemis-graph-theory-conjecture-20190617/ And visit her website: http://www.ericaklarreich.com/ Yaroslav Shitov’s breakthrough paper: https://arxiv.org/abs/1905.02167 More graph theory on Numberphile Four Color Maps: https://youtu.be/NgbK43jB4rQ An Unsolved Problem: https://youtu.be/niaeV_NHh-o Planar Graphs: https://youtu.be/xBkTIp6ajAg Perfect Graphs: https://youtu.be/C4Zr4cOVm9g Friends and Strangers: https://youtu.be/xdiL-ADRTxQ River Crossings: https://youtu.be/ZCVAGb1ee8A