PlanetPhysics/Essential Subcategory

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A [[../Cod/|category]] ℬE is defined as an essential subcategory of category 𝒜 if every [[../TrivialGroupoid/|object]] of 𝒜 is isomorphic to some object of ℬE.

All Sources

[1]

References

  1. ↑ Paul Taylor. "Practical Foundations of Mathematics.", Cambridge University Press, 1999. (see also categories, functors and pseudo-functors).

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