Quick Answer. Curad advises that healing occurs in four stages with deep cuts: hemostatis, which occurs immediately; inflammation, which lasts up to 4 days; proliferation, which typically takes 21 days; and remodeling, which can take up to 2 years. Keep Learning.
Euler Problem 14: Longest Collatz Sequence. Euler Problem 14 looks at the Collatz Conjecture. These playful sequences, named after German mathematician Lothar Collatz (1910â1990), cause mathematicians a lot of headaches. This video introduces the problem much better than I can describe it.
On June 24, John Isner and Nicolas Mahut finally finished the longest match in tennis history. Their match lasted three days and over 11 hours. The first four sets looked like any typical tennis match, but the fifth set put this game in the record books. Isner finally beat Mahut 70-68. This match made me think about the longest games in sports history and where Isner vs. Mahut stands in the record books.