Englishfor English speakers
morphism
noun
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(mathematics, category theory) (formally) An arrow in a category; (less formally) an abstraction that generalises a map from one mathematical object to another and is structure-preserving in a way that depends on the branch of mathematics from which it arises.
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map
of
Preposition
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Made using.
It is a house of cards.
rings
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noun
gymnastic apparatus consisting of a pair of heavy metal circles (usually covered with leather) suspended by ropes; used for gymnastic exercises
the rings require a strong upper body