Disjunctive sequence
A disjunctive sequence is an infinite sequence (over a finite alphabet of characters) in which every finite string appears as a substring. For instance, the binary Champernowne sequence
formed by concatenating all binary strings in shortlex order, clearly contains all the binary strings and so is disjunctive. (The spaces above are not significant and are present solely to make clear the boundaries between strings). The complexity function of a disjunctive sequence S over an alphabet of size k is pS(n) = kn.
Any normal sequence (a sequence in which each string of equal length appears with equal frequency) is disjunctive, but the converse is not true. For example, letting 0n denote the string of length n consisting of all 0s, consider the sequence
obtained by splicing exponentially long strings of 0s into the shortlex ordering of all binary strings. Most of this sequence consists of long runs of 0s, and so it is not normal, but it is still disjunctive.
A disjunctive sequence is recurrent but never uniformly recurrent/almost periodic.
Lexicon (disambiguation)
The lexicon of a language is its vocabulary.
Lexicon is also a synonym for a dictionary or encyclopedic dictionary, and may also refer to:
See also
Lexicon (game)
Lexicon is a computer-assisted role-playing game invented by Neel Krishnaswami and popularised by the indie role-playing game community. As originally proposed, it is played online using wiki software. Players assume the role of scholars who write the history and background of a particular fictitious time, setting, or incident. As the game goes on, the players collaboratively create an elaborately interwoven account.
Each game is a series of 26 turns, keyed to the letters of the alphabet from A to Z. On the first turn, each player must write an Encyclopedia-style entry beginning with the letter A, citing and linking to two entries that are not yet written. These are called "undefined" entries. Undefined entries must begin with a letter later in the alphabet.
The 25 subsequent turns proceed consecutively through the letters of the alphabet, one letter per turn. In a turn, each player writes one entry that begins with the turn's specified letter. If one or more undefined entries are available that begin with the letter, a player must choose and write an undefined entry before any new entries can be created under that letter. A new entry must create and link to two undefined entries, and must also link to an entry written on a previous turn. Near the endgame, when sufficient undefined entries exist to occupy all players for the remainder of the game, no new undefined entries may be created.
Letterpress printing
Letterpress printing is a technique of relief printing using a printing press, a process by which many copies are produced by repeated direct impression of an inked, raised surface against sheets or a continuous roll of paper. A worker composes and locks movable type into the "bed" or "chase" of a press, inks it, and presses paper against it to transfer the ink from the type which creates an impression on the paper.
In practice, letterpress also includes other forms of relief printing with printing presses, such as wood engravings, photo-etched zinc "cuts" (plates), and linoleum blocks, which can be used alongside metal type, or wood type, in a single operation, as well as stereotypes and electrotypes of type and blocks. With certain letterpress units it is also possible to join movable type with slugs cast using hot metal typesetting. In theory, anything that is "type high" or .918 inches can be printed using letterpress
Letterpress printing was the normal form of printing text from its invention by Johannes Gutenberg in the mid-15th century until the 19th century and remained in wide use for books and other uses until the second half of the 20th century. Letterpress printing remained the primary way to print and distribute information until the 20th century, when offset printing was developed, which largely supplanted its role in printing books and newspapers. All forms of data collection were affected by the invention of letterpress printing, as were many careers such as teachers, preachers, physicians and surgeons and artist-engineers. More recently, letterpress printing has seen a revival in an artisanal form.
Robert Chase
Robert Chase, M.D. is a fictional character on the Fox medical drama House. He is portrayed by Jesse Spencer. His character was a part of the team of diagnosticians who worked under Gregory House until the end of the third season when House fires him. However, he resumed work at the hospital as a surgeon, and was re-hired by House in season 6. Robert Chase is the longest-serving member of House's staff. Chase has been attracted to Allison Cameron since the beginning of the show and embarks on a romantic relationship with her in "Human Error." In "Post Mortem," he left the Diagnostic Team after realizing he was in the same position as he was 10 years earlier, unlike all of the other former members of the team. However, in the series finale, he rejoins the hospital as the new Head of Diagnostic Medicine, replacing House, who is thought to have died.
Characterization
An Australian, Chase is portrayed as an eager fellow of House during the first 3 seasons, often supporting his opinions and carrying out his orders without question. He was raised Catholic, and in the Season 1 episode "Damned If You Do," it was revealed that he attended seminary before becoming a doctor. He seems to trust House the most and sometimes takes part in House's morally questionable plans when the other members of the team have refused, showing a situational application of ethics and a flexible stance on morality. This leads to tension between Chase and Foreman, who is quick to disagree with House and prove him wrong.
Chase (name)
Chase is a given name and surname in the English language, especially in the United States. The given name is a transferred use of the surname.
People with the given name
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