Model checking

Timed word

In model checking, a subfield of computer science, a timed word is an extension of the notion of words, in a formal language, in which each letter is associated with a positive time tag. The sequence of time tag must be non-decreasing, which intuitively means that letters are received. For example, a system receiving a word over a network may associate to each letter the time at which the letter is received. The non-decreasing condition here means that the letters are received in the correct order. A timed language is a set of timed words. (Wikipedia).

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Metric temporal logic | Linear temporal logic | Zeno's paradoxes | Alphabet (formal languages) | Formal language | Model checking | Timed automaton