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The unique nature of the topological codes, such as the toric code, ... [20] and string-net models, [21] which allow a greater richness in the behaviour of anyons, ...
A cipher machine developed for Japanese naval attaché ciphers, similar to JADE. It was not used extensively, [5] [6] but Vice Admiral Katsuo Abe, a Japanese representative to the Axis Tripartite Military Commission, passed considerable information about German deployments in CORAL, intelligence "essential for Allied military decision making in the European Theater."
Postal codes were introduced in France in 1964, when La Poste introduced automated sorting.They were updated to use the current 5 digit system in 1972. France uses five-digit numeric postal codes, the first two digits representing the département in which the city is located.
Area codes 937 and 326 are telephone area codes in the North American Numbering Plan (NANP) assigned to a numbering plan area (NPA) that encompasses much of the southwestern part of the U.S. state of Ohio, including Dayton and Springfield. Area code 937 was established in September 1996, in a split of area code 513.
The three-digit codes were assigned to numbering plan areas in seemingly random manner, avoiding consecutive, nearly-consecutive, or just very similar codes in neighboring numbering plan areas to avoid customer confusion, [12] even when located in the same jurisdiction. This criterion was not always achieved, however.
The description above is given for what is now called a serially concatenated code. Turbo codes, as described first in 1993, implemented a parallel concatenation of two convolutional codes, with an interleaver between the two codes and an iterative decoder that passes information forth and back between the codes. [6]
Chart of the Morse code 26 letters and 10 numerals [1]. This Morse key was originally used by Gotthard railway, later by a shortwave radio amateur [2]. Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs.
In January 2018, Tom and Dawna Colbert reported that they had obtained a confession letter originally written in December 1971 containing codes that matched three units Rackstraw was a part of while in the Army. [336] [337] [338]