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In particular, a set is ultra if and only if and contains as a subset some ultra family of sets. A filter subbase that is ultra is necessarily a prefilter. [proof 1] The ultra property can now be used to define both ultrafilters and ultra prefilters: An ultra prefilter [2] [3] is a prefilter that is ultra. Equivalently, it is a filter subbase ...
The ultrafilter monad is the codensity monad of the inclusion of the category of finite sets into the category of all sets. [ 1 ] Similarly, the ultraproduct monad is the codensity monad of the inclusion of the category F i n F a m {\displaystyle \mathbf {FinFam} } of finitely-indexed families of sets into the category F a m {\displaystyle ...
Aurora designed the AFX cars with interchangeable car body shells usually compatible with each chassis they released during these years. The original 1971 A/FX chassis utilized an updated version of the existing pancake motor design of Aurora's "Thunderjet 500" line, popular in the 1960s. [2]
Ultra - - United States Television Manufacturing Corp. 1945 1950 Vestel: 1980s present Videocon: 1980s present Videoton: 1959 - Vizio: 2002 present Vu Televisions: 2006 Present Founded in California Walton: 2001 Present Westinghouse Electric Corporation: 1947 1969 Westinghouse Electronics: 2003 present White-Westinghouse - - Xiaomi: 2017 ...
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Later sets added 45 degree bends and 10" straights. More elaborate sets included a 4 lanes wide straight that allowed you to drive off onto a second track or a pitlane, a banked corner where the centrifugal force generated by a fast moving car would allow it to run off from the electronic power strips onto a banked extension to the outside of ...
Robotic Lego sets and kits aimed at teaching coding and robotics: Lego 1998–2022 Lego Mixels: Mixels: Lego, Cartoon Network: 2014–2016 Lego Model Team Advanced vehicle models Lego 1986, 1990–1991, 1993–1999, 2004 Lego Monster Fighters: Monster fighters, monsters, zombies and ghosts: Lego 2012 Lego Muji [78] [79] [80]
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