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.
Because of the way languages change gradually, it is usually impossible to pinpoint when a given language began to be spoken. In many cases, some form of the language had already been spoken (and even written) considerably earlier than the dates of the earliest extant samples provided here.ecause of the way languages change gradually, it is usually impossible to pinpoint when a given language began to be spoken. In many cases, some form of the language had already been spoken (and even written) considerably earlier than the dates of the earliest extant samples provided here.