III. return the bill to Congress for clarification on some point within the bill IV. allow the Congress to pocket veto the bill, thereby allowing the bill to become law without his signature a.
Decidability. Definition: A language is called decidable if there exists a method-any method at all-to determine whether a given word belongs to that language or not. Working hypothesis I: Decidability is well defined above.roof: Surely, a decidable language is recognizable. Moreover, if a language is decidable, then so is its complement, and hence that complement is recognizable. Now suppose a language L and its complement are recognizable. Let A be a recognizer for L, and B for its complement.
Definition. Language is a human system of communication that uses arbitrary signals, such as voice sounds, gestures, and/or written symbols. The study of language is called linguistics.Linguists (that is, specialists in the study of language) have defined language in many different ways.ere, chronologically arranged, are a few of those definitions.  1  Language is a purely human and non-instinctive method of communicating ideas, emotions and desires by means of voluntarily produced symbols.. ( 2 Edward Sapir, Language: An Introduction to the Study of Speech.