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Is there a category of categories?

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#category-theory
220
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Underlying functor of tensor product in a closed and symmetric monoidal category.

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#category-theory #monoidal-categories #enriched-category-theory
199
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~ The important use of Frobenius–Schur indicators and Frobenius-Schur exponents ~

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#abstract-algebra #group-theory #category-theory #representation-theory #quantum-groups
176
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Topological construct

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#general-topology #category-theory
675
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Foundations book using category theory for student embarking on PhD in mathematical biology?

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#reference-request #soft-question #category-theory #book-recommendation #foundations
100
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Is the category of these particularly nice spaces cartesian closed?

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#general-topology #category-theory #compactness #connectedness
56
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Behaviour of $\operatorname{Ext}$ with left exact sequences.

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#category-theory #exact-sequence #derived-functors
346
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What is a zero morphism in an abelian category

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#category-theory #intuition #abelian-categories
470
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Why is $\mathsf{HTAG}$ (Hausdorff, Topological, Abelian Groups) preabelian?

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#category-theory #homological-algebra #abelian-categories
99
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equivalence in category

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#category-theory #modules
461
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Category of Presheaves on a small category $C$ is locally cartesian closed

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#category-theory
314
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Is a homomorphism expected to be a (structure-preserving) map?

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#category-theory #terminology #model-theory
188
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Which constructions on a category are still interesting for a groupoid?

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#category-theory #model-theory #groupoids
56
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exercise involving exactness

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#category-theory #abelian-categories
84
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Arrow between endofunctors over a symmetric monoidal category.

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#category-theory

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