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Questions tagged [enriched-category-theory]

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6 votes
0 answers
345 views

Enriched Categories: Metric Spaces, Monoidal Endofunctors and Lipschitz-Continuous Maps.

In the introduction to the reprint of "Metric spaces, generalized logic and closed categories" Lawvere talks about the following situation: Let $\mathbb R_+$ denote $\mathbb R_{\geq 0}^\infty$. Every ...
Gerrit Begher's user avatar
2 votes
1 answer
178 views

Reference Request(Enriched Categories): Metric on Lipschitz Continuous Functions

If we consider metric spaces to be categories enriched over $\mathbb R_{\geq 0}$, the object corresponding to presheaves should be lipschitz-continuous functions $\operatorname{Lip^ 1}(M, \mathbb R_{\...
Gerrit Begher's user avatar
8 votes
1 answer
454 views

Definition of enriched caterories or internal homs without using monoidal categories.

I know this question may seem nonsensical at first but let me exlain what i have in mind: In enriched category theory we define categories enriched over a monoidal category $(\mathcal{V},\otimes, I)$....
Gerrit Begher's user avatar
45 votes
0 answers
1k views

Enriched Categories: Ideals/Submodules and algebraic geometry

While working through Atiyah/MacDonald for my final exams I realized the following: The category(poset) of ideals $I(A)$ of a commutative ring A is a closed symmetric monoidal category if endowed ...
Gerrit Begher's user avatar
20 votes
0 answers
2k views

Can the similarity between the Riesz representation theorem and the Yoneda embedding lemma be given a formal undergirding?

For example, by viewing Hilbert spaces as enriched categories in some fashion? (I suppose the same idea of considering the inner product of a Hilbert space as a generalized Hom-set has also been ...
Sridhar Ramesh's user avatar
3 votes
0 answers
262 views

Name for enrichment with Hom(1,-) a full functor?

Let C be a V-enriched category and 1 be a terminal object of C. V is not necessarily a closed category, and C does not necessarily have an internal hom (nor is C even necessarily a monoidal category)....
Lamont C's user avatar
  • 141
17 votes
2 answers
1k views

Model category structure on categories enriched over quasi-coherent sheaves

Gonçalo Tabuada has shown that there is a Quillen model category structure on the category of small dg-categories, i.e. the category of small categories enriched over chain complexes (for a fixed ...
Jesse Burke's user avatar
9 votes
3 answers
884 views

Enriched locally presentable categories

Is there a standard reference for the theory (if it exists) of $\mathcal{V}$-enriched locally presentable categories? Here $\mathcal{V}$ is a cosmos. Does anything unexpected happens here in contrast ...
Martin Brandenburg's user avatar
3 votes
2 answers
530 views

When does the 2-category V-Cat have pseudo-pullbacks?

Edit: rewritten the question (edit:again), as I realised I wanted weak pseudo-pullbacks, not comma objects. Consider the 2-category $V$-$Cat$ of $V$-enriched categories. An example is $Cat$ itself, ...
David Roberts's user avatar
  • 34.8k
19 votes
0 answers
1k views

Is there some way to see a Hilbert space as a C-enriched category?

The inner product of vectors in a Hilbert space has many properties in common with a hom functor. I know that one can make a projectivized Hilbert space into a metric space with the Fubini-Study ...
Mike Stay's user avatar
  • 1,532
3 votes
4 answers
544 views

Is there a sensible way to enrich over SymMonCat such that id_X is not the monoidal unit?

SymMonCat is the cartesian 2-category of symmetric monoidal categories, braided monoidal functors, and monoidal natural transformations. The terminal symmetric monoidal category 1 has one object $I$ ...
Mike Stay's user avatar
  • 1,532
8 votes
2 answers
457 views

Pointer to literature on double enrichment and functors among enriching categories?

I'm currently working with the following two situations: $\mathbb A$ is a monoidal category, $\mathbb B$ is an $\mathbb A$-enriched monoidal category, and $\mathbb C$ is a $\mathbb B$-enriched ...
Adam's user avatar
  • 3,267

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