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3 天前 · Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is. The parameter is the mean or expectation of the distribution (and also its median and mode ), while ...
1 天前 · Aryna Siarhiejeŭna Sabalenka (born 5 May 1998) is a Belarusian professional tennis player. She is a former world No. 1 in both singles and doubles by the Women's Tennis Association (WTA). Sabalenka has won two major singles titles, at the 2023 and 2024 Australian Opens, and two major doubles titles at the 2019 US Open and the 2021 Australian Open, both partnering Elise Mertens.
1 天前 · Religious style. Ayatullah al-Uzma Ruhollah Khomeini [5] Ayatollah Ruhollah Musavi Khomeini [b] (17 May 1900 or 24 September 1902 [a] – 3 June 1989) was an Iranian Islamic revolutionary, politician, and religious leader who served as the first supreme leader of Iran from 1979 until his death in 1989. He was the founder of the Islamic Republic ...
2 天前 · In a DNA double helix, each type of nucleobase on one strand bonds with just one type of nucleobase on the other strand. This is called complementary base pairing.Purines form hydrogen bonds to pyrimidines, with adenine bonding only to thymine in two hydrogen bonds, and cytosine bonding only to guanine in three hydrogen bonds. . This arrangement of two nucleotides binding together across the ...
4 天前 · United Nations. ^ The headquarters were based from 1 November 1920 in the Palais Wilson in Geneva, Switzerland, and from 17 February 1936 in the purpose built Palace of Nations, also in Geneva. The League of Nations ( French: Société des Nations [sɔsjete de nɑsjɔ̃]) was the first worldwide intergovernmental organisation whose principal ...
2 天前 · Judith Pamela Butler[1] (born February 24, 1956) is an American philosopher and gender studies scholar whose work has influenced political philosophy, ethics, and the fields of third-wave feminism,[2] queer theory,[3] and literary theory.[4] In 1993, Butler began teaching at the University of California, Berkeley, where they[a] have served ...
2 天前 · The history of the U.S. Armed Forces dates back to 14 June 1775, with the creation of the Continental Army, even before the Declaration of Independence marked the establishment of the United States. The Continental Navy, established on 13 October 1775, and Continental Marines, established on 10 November 1775, were created in close succession by the Second Continental Congress in order to ...
