Mathematical concept; value which cannot be changed or does not change during a process
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10 identifiers linking constant across the web's reference databases
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In mathematics, the word constant conveys multiple meanings. As an adjective, it refers to non-variance ; as a noun, it has two different meanings:A fixed and well-defined number or other non-changing mathematical object, or the symbol denoting it. The terms mathematical constant or physical constant are sometimes used to distinguish this meaning. A function whose value remains unchanged. Such a constant is commonly represented by a variable which does not depend on the main variable(s) in question.