- Ernst Friedrich Ferdinand Zermelo (/zɜːrˈmɛloʊ/, German: [tsɛɐ̯ˈmeːlo]; 27 July 1871 – 21 May 1953) was a German logician and mathematician, whose work has major implications for the foundations of mathematics. He is known for his role in developing Zermelo–Fraenkel axiomatic set theory and his proof of the well-ordering theorem. Furthermore, his 1929 work on ranking chess players is the first description of a model for pairwise comparison that continues to have a profound impact on various applied fields utilizing this method.
- January 6 United States Capitol attack (Wikipedia)
On January 6, 2021, the United States Capitol Building in Washington, D.C., was attacked by a mob of supporters of then-U.S. president Donald Trump, two months after his defeat in the 2020 presidential election. They sought to keep Trump in power by occupying the Capitol and preventing a joint session of Congress counting the Electoral College votes to formalize the victory of President-elect Joe Biden. The attack was ultimately unsuccessful in preventing the certification of the election results. According to the House select committee investigating the incident, the attack was the culmination of a seven-part plan by Trump to overturn the election.