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.
The receiving radio may be programmed to only respond to signals transmitting the desired tone frequency. Digital Coded Squelch (DCS) is a digital form of CTCSS. A third type of squelch system, called Selective Calling (SelCall) is used in some business radios, but is not used in Ham radios. Note that none of these squelch systems are used in digital radios. CTCSS is also known by a number of other terms which are registered trademarks of individual manufacturers. Among them are Private Line (PL), owned by Motorola; Channel Guard (CG), owned by GE/Ericsson/Harris; and Quiet Tone (QT), owned by Kenwood.