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This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-04-15 and was most recently seen on 2026-04-15.
In automata theory, an alternating finite automaton (AFA) is a nondeterministic finite automaton whose transitions are divided into existential and universal transitions. For example, let A be an alternating automaton.For an existential transition , the automaton A nondeterministically chooses to switch the state to either or , upon reading a. Thus, behaving like a regular nondeterministic finite automaton.
For a universal transition , the automaton A moves to and , upon reading a, simulating the behavior of a parallel machine.
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