Also known as multifunction, many-valued function, set-valued function, set-valued map, point-to-set map, multi-valued map, multimap, carrier
binary relation, which is left-total, but may not be right-unique ; isomorph to another function from the same source set, but to the power set of the codomain of the initial function
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).