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A natural sign bears a causal relation to its object—for instance, thunder is a sign of storm, or medical symptoms a sign of disease. A conventional sign signifies by agreement, as a full stop signifies the end of a sentence; similarly the words and expressions of a language , as well as bodily gestures , can be regarded as signs, expressing ...
Early Christians used the sign or a cross or the Ichthys (i.e. fish) to denote their religious affiliations, whereas the sign of the sun or the moon would serve the same purpose for pagans. [7] The use of commercial signage has a very ancient history. Retail signage and promotional signs appear to have developed independently in the East and ...
Feminine ordinal indicator, Degree sign: −: Minus sign: Hyphen-minus, Commercial minus: ×: Multiplication sign: X mark # Number sign: Numero sign. Also known as "octothorpe", "hash" and "hashtag sign" Pound sign № Numero sign: Number sign: Obelus: Division sign, Dagger, Commercial minus, Index ( ) Parenthesis: Bracket, Angle bracket ...
A cardinal sign or cardinal symptom can also refer to the major sign or symptom of a disease. [12] Abnormal reflexes can indicate problems with the nervous system . Signs and symptoms are also applied to physiological states outside the context of disease, as for example when referring to the signs and symptoms of pregnancy , or the symptoms of ...
An alternative definition of symbol, distinguishing it from the term sign was proposed by Swiss psychoanalyst Carl Jung. In his studies on what is now called Jungian archetypes, a sign stands for something known, as a word stands for its referent. He contrasted a sign with a symbol: something that is unknown and that cannot be made clear or ...
[8]: 4 That is, a sign can only be understood when the relationship between the two components that make up the sign are agreed upon. Saussure argued that the meaning of a sign "depends on its relation to other words within the system;" for example, to understand an individual word such as "tree," one must also understand the word "bush" and ...
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The sign of a complex number is the exponential of the product of its argument with the imaginary unit. represents in some sense its complex argument. This is to be compared to the sign of real numbers, except with = For the definition of a complex sign-function. see § Complex sign function below.