ต่อครับ.
4 ธันวาคม
1409 : The University of Leipzig established.
1679 : Philosopher Thomas Hobbes died, thus ending his 25 year feud with John Wallis over Hobbes's attempt to square the circle in 1655. It began when Hobbes called Wallis's Arithmetica Infinitorum a "scab of symbols."
5 ธันวาคม
1825 : Abel writes how delighted he is that Crelle is starting a new mathematics journal, for this means he will now have a place to publish his research. The first volume contained seven papers by Abel.
6 ธันวาคม
1592 : Galileo delivers his inaugural lecture at Padua.
1682 : Giulio Carlo Fagnano dei Toschi born. He was the founder of the geometry of the triangle, studied the lemniscate, and coined the term "elliptic integral."
1917 : Kazimierz Kuratowski gave a talk "On the definitions in mathematics," which became his first published paper. This work grew out of Jan Lukasiewicz's crushing criticism of the foundations of Stanislaw Zaremba's Theoretical Arithmetic (1912). Kuratowski's now famous 1921 definition of ordered pairs also grew out of Lukasiewicz's critique.
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