8128 Nicomachus
{{Numberdis ...
81 may refer to: * 81 (number) * one of the years 81 BC, AD 81, 1981, 2081 * Nickname for the Hells Angels Motorcycle Club. "H" is the eighth letter of the alphabet, and "A" is the first. See also * * List of highways numbered A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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81 (number)
81 (eighty-one) is the natural number following 80 and preceding 82. In mathematics 81 is: * the square of 9 and the fourth power of 3. * a perfect totient number like all powers of three. * a heptagonal number. * a centered octagonal number. * a tribonacci number. * an open meandric number. * the ninth member of the Mian-Chowla sequence. * a palindromic number in bases 8 (1218) and 26 (3326). * a Harshad number in bases 2, 3, 4, 7, 9, 10 and 13. * one of three non-trivial numbers (the other two are 1458 and 1729) which, when its digits (in decimal) are added together, produces a sum which, when multiplied by its reversed self, yields the original number: : 8 + 1 = 9 : 9 × 9 = 81 (although this case is somewhat degenerate, as the sum has only a single digit). The inverse of 81 is 0. recurring, missing only the digit "8" from the complete set of digits. This is an example of the general rule that, in base ''b'', :\frac = 0.\overline, omitting only the digit ''b'' ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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81 BC
__NOTOC__ Year 81 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Decula and Dolabella (or, less frequently, year 673 '' Ab urbe condita''). The denomination 81 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Republic * Sulla is appointed ''dictator'', executes his political enemies in a series of proscriptions, and implements aristocratic reforms to the Roman government. * The Second Mithridatic War ends with the '' status quo''. * Cicero wins his first case. China * Sang Hongyang and 60 Confucian scholars debate over the state monopoly of Iron and Salt. Births * Deaths * Artaxias I (or Arshak), king of Iberia (Georgia) * Gnaeus Domitius Ahenobarbus, Roman politician * Ptolemy IX Lathyros Ptolemy IX Soter II Ptolemy IX also took the same title 'Soter' as Ptolem ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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AD 81
A.D. 81 ( LXXXI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Silva and Pollio (or, less frequently, year 834 ''Ab urbe condita''). The denomination A.D. 81 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * September 14 – Domitian succeeds his brother Titus as emperor. Domitian is not a soldier like his two predecessors, and his administration is directed towards the reinforcement of a monarchy. By taking the title of Dominus ("lord"), he scandalizes the senatorial aristocracy. Romanisation progresses in the provinces, and life in the cities is greatly improved. Many provincials – Spanish, Gallic, and African – become Senators. * The Arch of Titus is constructed. * Pliny the Younger is ''flamen Divi Augusti'' ( ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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1981
Events January * January 1 ** Greece enters the European Economic Community, predecessor of the European Union. ** Palau becomes a self-governing territory. * January 10 – Salvadoran Civil War: The FMLN launches its first major offensive, gaining control of most of Morazán and Chalatenango departments. * January 15 – Pope John Paul II receives a delegation led by Polish Solidarity leader Lech Wałęsa at the Vatican. * January 20 – Iran releases the 52 Americans held for 444 days, minutes after Ronald Reagan is sworn in as the 40th President of the United States, ending the Iran hostage crisis. * January 21 – The first DeLorean automobile, a stainless steel sports car with gull-wing doors, rolls off the production line in Dunmurry, Northern Ireland. * January 24 – An earthquake of magnitude in Sichuan, China, kills 150 people. Japan suffers a less serious earthquake on the same day. * January 25 – In South Africa the largest part of the town Laingsburg is ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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2081
In contemporary history, the third millennium of the anno Domini or Common Era in the Gregorian calendar is the current millennium spanning the years 2001 to 3000 (21st to 30th centuries). Ongoing futures studies seek to understand what is likely to continue and what could plausibly change in the course of this period and beyond. Predictions and forecasts not included on this timeline * List of future astronomical events ** List of lunar eclipses in the 21st century ** List of solar eclipses in the 21st century * Projections of population growth * Climate change ** Representative Concentration Pathway ** Shared Socioeconomic Pathways * Extinction * List of dates predicted for apocalyptic events * Predictions and claims for the Second Coming * Near future in fiction * Works falling into the public domain in the United States 21st century 2000s * See: 2001 * 2002 * 2003 * 2004 * 2005 * 2006 * 2007 * 2008 * 2009 2010s * See: 2010 * 2011 * 2012 * 2013 * 2014 * 2015 * 20 ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Hells Angels Motorcycle Club
The Hells Angels Motorcycle Club (HAMC) is a worldwide outlaw motorcycle club whose members typically ride Harley-Davidson motorcycles. In the United States and Canada, the Hells Angels are incorporated as the Hells Angels Motorcycle Corporation. Common nicknames for the club are the "H.A.", "Red & White", "HAMC", and "81". With a membership between 3,000 and 3,600 and 467 chapters in 59 countries, the HAMC is one of the largest motorcycle clubs in the world. Many police and international intelligence agencies, including the United States Department of Justice and Europol, consider the club an organized crime syndicate. History The Hells Angels originated on March 17, 1948, in Fontana, California, when several small motorcycle clubs agreed to merge.''The Secret Life of Bikers'' by Jerry Langton. Location 19.5/477. HarperCollings:2018 Otto Friedli, a World War II veteran, is credited with starting the club after breaking from the Pissed Off Bastards motorcycle club over a fe ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |