presheaf
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category
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Yoneda lemma
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natural transformation
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limit
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Hom functor
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quasi-category
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mathematics
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International Standard Book Number
Entity
digital object identifier
Entity
topological space
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category theory
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open set
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universal quantification
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partially ordered set
Entity
group action
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functor
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Saunders Mac Lane
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sheaf
Entity
morphism
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loopless multigraph
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