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The logical symbol ∀ has the same shape as a sans-serif capital turned A. It is used to represent universal quantification in predicate logic , where it is typically read as "for all". It was first used in this way by Gerhard Gentzen in 1935, by analogy with Giuseppe Peano 's turned E notation for existential quantification and the later use ...
Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script. For a far more comprehensive list of symbols and signs, see List of Unicode characters.
Other rotated symbols include ɞ (rotated or reversed ʚ), ʖ (rotated ʕ) ⱹ (rotated ɽ), ɺ (rotated ɼ), the digits ↊ and ↋, the insular g: Ꝿ ꝿ, and the ampersand ⅋. The turned comma or inverted comma (‘) is, as its name suggests, a rotated comma. This symbol is most commonly encountered as an opening single quotation mark.
To use the shortcut, turn on NumLock / Fn, and make sure the cursor is flashing where you want the symbol to go. Press and hold the alt key, and then press numbers. You don’t need to press the ...
In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.
The ditto mark is a shorthand sign, used mostly in hand-written text, indicating that the words or figures above it are to be repeated. [1] [2]The mark is made using "a pair of apostrophes"; [1] "a pair of marks " used underneath a word"; [3] the symbol " (quotation mark); [2] [4] or the symbol ” (right double quotation mark).
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ONE DOT LEADER U+2024: Po, other ... TURNED COMMA U+2E32: Po, other Common ⸳ ... BATAK SYMBOL BINDU NA METEK U+1BFC: Po, other Batak ᯽