— Tautological Tau to*log ic*al, a. [Cf. F. tautologique.] Involving tautology; having the same signification; as, tautological expression. {Tau to*log ic*al*ly}, adv. [1913 Webster] {Tautological echo}, an echo that repeats the same sound or… … The Collaborative International Dictionary of English

**tautologically** — adverb see tautological … New Collegiate Dictionary

**tautologically** — adverb In a tautological manner … Wiktionary

**tautologically** — adv. in a tautological manner, while needlessly repeating same idea in different words … English contemporary dictionary

**tautologically** — tau·to·log·i·cal·ly … English syllables

**tautologically** — See: tautological … English dictionary

**tautologically** — adverb see tautological … Useful english dictionary

**Tautology (logic)** — In propositional logic, a tautology (from the Greek word ταυτολογία) is a propositional formula that is true under any possible valuation (also called a truth assignment or an interpretation) of its propositional variables. For example, the… … Wikipedia

**Identity (mathematics)** — For other uses, see Identity (disambiguation). In mathematics, the term identity has several different important meanings: An identity is a relation which is tautologically true. This means that whatever the number or value may be, the answer… … Wikipedia

**Craig interpolation** — In mathematical logic, Craig s interpolation theorem is a result about the relationship between different logical theories. Roughly stated, the theorem says that if a formula φ implies a formula ψ then there is a third formula ρ, called an… … Wikipedia