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adjunction. In DICTIOUS you will not only get to know all the dictionary meanings for the word
adjunction, but we will also tell you about its etymology, its characteristics and you will know how to say
adjunction in singular and plural. Everything you need to know about the word
adjunction you have here. The definition of the word
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English
Etymology
From Latin adjunctio, from adjungere: compare French adjonction, and see adjunct.
Noun
adjunction (countable and uncountable, plural adjunctions)
- The act of joining; the thing joined or added.
- (law) The joining of personal property owned by one to that owned by another.
- (category theory) Given a pair of categories and : an anti-parallel pair of functors and and a natural transformation called “unit” such that for any object , for any object , and for any morphism , there is a unique morphism such that . (Note: there is another natural transformation called “counit” as well but its existence may be derived by theorem.) The pair of functors express a similarity between the pair of categories which is weaker than that of an equivalence of categories.
- Hyponyms: equivalence of categories, isomorphism of categories, Galois connection
- Meronyms: adjoint, left adjoint, right adjoint
Derived terms
Translations
the thing joined or added
Translations to be checked
References
- ^ Michael Barr with Charles Wells (1995) Category Theory for Computing Science, second edition, University Press, Cambridge, Great Britain: Prentice Hall, →ISBN, §9.2, page 258