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Oct
28
answered When an equivalence is a monoidal equivalence?
Oct
24
answered When a continuous map from a quotient space satisfies the sheaf condition?
Oct
22
answered How does the forgetful functor from $\textsf{Man}$ to $\textsf{TopMan}$ factor under the ternary factorization system?
Oct
21
answered Any quasi-affine variety is isomorphic to a closed subvariety in $\mathbb{A}^n\setminus \mathbb{A}^m$ for some $m,n$.
Oct
20
answered definition of the notion of a subcategory of an $\infty$-category
Oct
19
answered Initial category having all limits and colimits?
Oct
18
answered When does an atomic topos have this property?
Oct
14
asked A preordered set related to realisability logic
Oct
12
answered Finitely generated iff direct limits of subobjects are bounded by subobjects
Oct
11
answered Finite Limits, Exponentiation and Sub-Object Classifiers imply Finite Co-Limits
Oct
11
answered over categories of a morphism?
Oct
7
answered Confusion about categorical viewpoint of normal subgroups
Oct
6
answered The category of presheaves on a possibly-large category
Oct
5
answered Equivalence of categories and axiom of choice
Oct
4
answered Colimit of Covariant hom functor is a singleton.
Sep
30
answered Is the classifying space a fully faithful functor?
Sep
30
answered Free modules internal to a nice category
Sep
30
answered Functors which induce isomorphisms on isomorphism-sets
Sep
22
answered Is the category of elements an example of a fibred category?
Sep
19
answered subschemes and subobjects