List questions from epimorphisms

Published on 25 Mar 2026 - 4:16

983

Views

Definition of strict epimorphism

Published on 30 Oct 2013 - 16:14

208

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For an abelian group $G=G'$, the endomorphism $x \mapsto x^{-1}$ is both monic and epic

Published on 09 Jan 2014 - 11:53

440

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Epimorphism and surjection

Published on 04 Jul 2017 - 8:33

38

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Show that a continuous epimorphism pushes forward connectedness

Published on 31 Oct 2017 - 3:40

69

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Is there a group epimorphism $\mathbb{R} \to S_3$?

Published on 14 Nov 2017 - 11:30

265

Views

In a category with binary products, every strong epimorphism is an epimorphism.

Published on 06 Dec 2017 - 17:57

2.9k

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An epimorphism from $S_{4}$ to $S_{3}$ having the kernel isomorphic to Klein four-group

Published on 07 Feb 2012 - 20:07

664

Views

Epimorphism and image

Published on 13 Sep 2012 - 15:29

2.8k

Views

An 'easy' way to prove that epimorphism of sheaves implies surjectivity on stalks

Published on 01 Oct 2012 - 22:20

1.8k

Views

Epic implies Surjective

Published on 25 Dec 2012 - 20:40

13.5k

Views

Epimorphism and Monomorphism = Isomorphism?

Published on 29 Dec 2012 - 6:18

168

Views

Epimorphism of sheaves of rings

Published on 20 Jan 2013 - 16:16

491

Views

Is the unit of an adjunction an epimorphism?

Published on 21 Jan 2013 - 19:39

425

Views

Mono/Epi of sections of presheaves

Published on 10 Feb 2013 - 19:53

List Question

Monomorphisms and epimorphisms in the category of Boolean algebras

Definition of strict epimorphism

For an abelian group $G=G'$, the endomorphism $x \mapsto x^{-1}$ is both monic and epic

Epimorphism and surjection

Show that a continuous epimorphism pushes forward connectedness

Is there a group epimorphism $\mathbb{R} \to S_3$?

In a category with binary products, every strong epimorphism is an epimorphism.

An epimorphism from $S_{4}$ to $S_{3}$ having the kernel isomorphic to Klein four-group

Epimorphism and image

An 'easy' way to prove that epimorphism of sheaves implies surjectivity on stalks

Epic implies Surjective

Epimorphism and Monomorphism = Isomorphism?

Epimorphism of sheaves of rings

Is the unit of an adjunction an epimorphism?

Mono/Epi of sections of presheaves

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