substitutivity

British

/ ˌsʌbstɪtjuːˈtɪvɪtɪ /

noun

logic philosophy the principle that expressions with the same reference can be substituted for one another without affecting the truth-value of any context in which they occur See also transparent context opaque context

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023