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Turned a in William Pryce's Archaeologia Cornu-Britannica, 1790. Because of the relative ease of creating this letterform using traditional printing methods, it had frequent and varied historical uses. According to the principle of acrophony, the letter A originated from the Proto-Sinaitic alphabet as a symbol representing the head of an ox or ...
propositional logic, Boolean algebra, first-order logic. ⊥ {\displaystyle \bot } denotes a proposition that is always false. The symbol ⊥ may also refer to perpendicular lines. The proposition. ⊥ ∧ P {\displaystyle \bot \wedge P} is always false since at least one of the two is unconditionally false. ∀.
The upside-down (also inverted, turned or rotated) question mark ¿ and exclamation mark ¡ are punctuation marks used to begin interrogative and exclamatory sentences or clauses in Spanish and some languages that have cultural ties with Spain, such as Asturian and Waray. [ 1] The initial marks are mirrored at the end of the sentence or clause ...
A character from the series Doctor Who called Omega, believed to be one of the creators of the Time Lords of Gallifrey. The symbol for the highest power level of a PSI attack in the Mother / EarthBound games. A symbol used by U.S. citizens in the 1960s & 1970s to denote resistance to the U.S. war in Viet Nam.
Airbnb's 2014 logo redesign introduced the "Bélo" symbol, which resembles a paper clip, the letter A, or an upside-down heart. The symbol was intended to represent belonging and connection.
Up tack. The up tack or falsum ( ⊥, \bot in LaTeX, U+22A5 in Unicode [1]) is a constant symbol used to represent: The truth value 'false', or a logical constant denoting a proposition in logic that is always false (often called "falsum" or "absurdum"). The bottom type in type theory, which is the bottom element in the subtype relation.
Heart symbol. The heart symbol is an ideograph used to express the idea of the "heart" in its metaphorical or symbolic sense. Represented by an anatomically inaccurate shape, the heart symbol is often used to represent the center of emotion, including affection and love, especially romantic love.
Enjoy a classic game of Hearts and watch out for the Queen of Spades!