 Angelic non-determinism

Angelic non-determinism is a concept from the field of theoretical computer science, particularly in the study of semantics in programming languages and computational models. It is associated with the classification of non-deterministic behaviors in computations. In non-deterministic computation, there are multiple possible outcomes for a given computational step. Angelic non-determinism allows a computation to choose from several possibilities, but it selects the "best" or "most favorable" outcome based on certain criteria.