AcceptanceFalse

AcceptanceFalse is a term used in theoretical computer science and formal semantics to denote the explicit false outcome of an acceptance check. It describes the situation in which a given input, state, or predicate does not meet the specified acceptance criterion.

In automata theory, a machine is said to accept an input when the computation ends in an accepting state. AcceptanceFalse indicates that the computation ends in a non-accepting state or that the acceptance predicate evaluates to false, signaling rejection or failure. The concept is often contrasted with acceptanceTrue or an accepting condition.

AcceptanceFalse is used to model rejection in validation workflows, policy evaluation, and error handling paths. It provides a named signal for explicit branching to rejection handlers, rather than relying on a generic false value.

Examples: A simple input validator may return AcceptanceTrue for valid input and AcceptanceFalse for invalid input. A access control system might produce AcceptanceFalse when credentials fail verification.

See also:

- False positive

- False negative

- Rejection

- Acceptance condition

- Boolean logic