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Ivar the Boneless ( Old Norse: Ívarr hinn Beinlausi [ˈiːˌwɑrː ˈhinː ˈbɛinˌlɔuse]; died c. 873), also known as Ivar Ragnarsson, was a Viking leader who invaded England and Ireland. According to the Tale of Ragnar Lodbrok, he was the son of Aslaug and her husband Ragnar Loðbrok, and was the brother of Björn Ironside, Halvdan ...
History of PDF. The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of ...
K2-18b, also known as EPIC 201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth. The planet is a sub-Neptune about 2.6 times the radius of Earth, with a 33-day orbit within the star's habitable zone. This means it receives about a similar amount of starlight as the Earth receives from the Sun.
Revision list. Revision lists ( Russian: Реви́зские ска́зки, romanized : Revizskie skazki ), are a series of census lists of the taxable population of the Russian Empire, taken between the early 18th century up until the end of the 19th century. The lists were taken to account and register information to collect tax revenue to ...
Steve Kornacki. May 3, 2024 at 6:00 AM. Photo collage of a horse race scoreboard, Steve Kornacki, and a horse running (Leila Register / NBC News; Getty Images) (Leila Register) The horses are ...
Revision is a process in writing of rearranging, adding, or removing paragraphs, sentences, or words. Writers may revise their writing after a draft is complete or during the composing process. Revision involves many of the strategies known generally as editing but also can entail larger conceptual shifts of purpose and audience as well as content.
Jean-Michel Basquiat ( French pronunciation: [ʒɑ̃ miʃɛl baskja]; December 22, 1960 – August 12, 1988) was an American artist who rose to success during the 1980s as part of the Neo-expressionism movement. Basquiat first achieved notoriety in the late 1970s as part of the graffiti duo SAMO, alongside Al Diaz, writing enigmatic epigrams ...
The Kolmogorov–Arnold–Moser ( KAM) theorem is a result in dynamical systems about the persistence of quasiperiodic motions under small perturbations. The theorem partly resolves the small-divisor problem that arises in the perturbation theory of classical mechanics . The problem is whether or not a small perturbation of a conservative ...