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The ellipsis (/ ə ˈ l ɪ p s ɪ s /, plural ellipses; from Ancient Greek: ἔλλειψις, élleipsis, lit. ' leave out ' [1]), rendered ..., alternatively described as suspension points [2]: 19 /dots, points [2]: 19 /periods of ellipsis, or ellipsis points, [2]: 19 or colloquially, dot-dot-dot, [3] [4] is a punctuation mark consisting of a series of three dots.
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...
In combinatorics on words, Fine and Wilf's theorem is a fundamental result describing what happens when a long-enough word has two different periods (i.e., distances at which its letters repeat). [ 1 ] [ 2 ] Informally, the conclusion is that such words w {\displaystyle w} have also a third, shorter period.
It may be placed after an initial letter used to abbreviate a word. It is often placed after each individual letter in acronyms and initialisms (e.g., "U.S."). However, the use of full stops after letters in an initialism or acronym is declining, and many of these without punctuation have become accepted norms (e.g., "UK" and "NATO"). [c] When ...
The most known chemical elements whose covalent combinations make up most biological molecules on Earth. [2] All of these elements are nonmetals.. In animals in general, the four elements—C, H, N, and O—compose about 96% of the weight, and major minerals (macrominerals) and minor minerals (also called trace elements) compose the remainder.
If there's only one space after periods, you cannot easily distinguish an internal period (as in "e.g. blah") from a sentence-ending period. In a mono-spaced environment, it also makes it easier to read, and is standard typographic practice (in a non-mono-spaced environment, like LaTeX or professional typesetting, generally one-and-one-half ...
I Before E (Except After C): Old-School Ways To Remember Stuff was a miscellany released in the UK for the Christmas 2007 "stocking filler" market, [43] which sold well. [44] "I Before E Except After C" is a song on Yazoo's 1982 album Upstairs at Eric's. The Jackson 5's 1970 hit "ABC" has the lyric "I before E