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A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry. This registry includes all substances ...
Fibonacci sequence. A tiling with squares whose side lengths are successive Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13 and 21. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn .
ChatGPT was released as a freely available research preview, but due to its popularity, OpenAI now operates the service on a freemium model. Users on its free tier can access the GPT-3.5-based version, while the more advanced GPT-4 and other features are released under the "ChatGPT Plus" paid subscription service.
The McDonnell Douglas F-15 Eagle is an American twin-engine, all-weather tactical fighter aircraft designed by McDonnell Douglas (now part of Boeing ). Following reviews of proposals, the United States Air Force (USAF) selected McDonnell Douglas's design in 1969 to meet the service's need for a dedicated air superiority fighter.
The number 0 is the smallest nonnegative integer, and the largest nonpositive integer. The natural number following 0 is 1 and no natural number precedes 0. The number 0 may or may not be considered a natural number, but it is an integer, and hence a rational number and a real number. All rational numbers are algebraic numbers, including 0.
Weakly prime numbers. Primes that having any one of their (base 10) digits changed to any other value will always result in a composite number. 294001, 505447, 584141, 604171, 971767, 1062599, 1282529, 1524181, 2017963, 2474431, 2690201, 3085553, 3326489, 4393139 ( OEIS : A050249 )
The Latvian telephone numbering plan is a telephone number assigning system used in Latvia.All the numbers consist of 8 digits with exceptions for special services. The assigning process is controlled by the Electronic Communications Office (Latvian: VAS "Elektroniskie sakari") and regulated by the Public Utilities Commission (Latvian: Sabiedrisko pakalpojumu regulēšanas komisija).
Peacock TV, LLC. Peacock is an American over-the-top video streaming service owned and operated by Peacock TV LLC, a subsidiary of NBCUniversal Media Group. Named after the NBC logo, the service launched on July 15, 2020. [2] [3] [4] The service primarily features series and film content from NBCUniversal studios and other third-party content ...