List questions from functors

Published on 12 Apr 2026 - 21:56

216

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Preservation of limits by representable functors

Published on 29 Apr 2026 - 12:46

132

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There is a natural morphism $\lim\limits_{\longleftarrow} \beta \to \lim\limits_{\longleftarrow} \beta \circ \varphi^{op}$?

Published on 03 May 2026 - 8:53

136

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Exact squares and exactness of comma squares

Published on 13 Apr 2026 - 16:46

530

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Functor to the empty (objectless) category?

Published on 17 Apr 2026 - 1:37

364

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extending functors

Published on 29 Apr 2026 - 12:55

225

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In a tensor category, does $X\otimes Y\cong 0$ imply $Y\cong 0$ for non-zero $X$?

Published on 16 Apr 2026 - 12:09

129

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Exact contravariant endofunctor preserving iso classes of simple objects sends objects of finite length to objects of finite length?

Published on 14 Apr 2026 - 18:41

85

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constructing a right adjoint to i:eff C ---> mod C

Published on 15 Apr 2026 - 13:46

108

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Is $\text{Conf}_n(\mathbb{A}^2)$ an affine variety?

Published on 11 Apr 2026 - 8:38

93

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Group homomorphism yields to monoidal functor

Published on 13 Apr 2026 - 5:30

207

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Left Kan extension: switching K and F

Published on 14 Apr 2026 - 23:37

119

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Image of a natural transformation under an equivalence

Published on 15 Apr 2026 - 13:32

88

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The images of the identity maps under the connecting homomorphisms

Published on 15 Apr 2026 - 23:23

1.5k

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Algebraic topology for non-nice spaces

Published on 12 Apr 2026 - 5:23

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(non)Functor examples

Preservation of limits by representable functors

There is a natural morphism $\lim\limits_{\longleftarrow} \beta \to \lim\limits_{\longleftarrow} \beta \circ \varphi^{op}$?

Exact squares and exactness of comma squares

Functor to the empty (objectless) category?

extending functors

In a tensor category, does $X\otimes Y\cong 0$ imply $Y\cong 0$ for non-zero $X$?

Exact contravariant endofunctor preserving iso classes of simple objects sends objects of finite length to objects of finite length?

constructing a right adjoint to i:eff C ---> mod C

Is $\text{Conf}_n(\mathbb{A}^2)$ an affine variety?

Group homomorphism yields to monoidal functor

Left Kan extension: switching K and F

Image of a natural transformation under an equivalence

The images of the identity maps under the connecting homomorphisms

Algebraic topology for non-nice spaces

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