Signal (model checking) (original) (raw)

In model checking, a subfield of computer science, a signal or timed state sequence is an extension of the notion of words, in a formal language, in which letters are continuously emitted. While a word is traditionally defined as a function from a set of non-negative integers to letters, a signal is a functions from a set of real number to letters. This allow to use formalism similar to the ones of automata theory to deal with continuous signal.