List questions from epimorphisms

Published on 15 Apr 2026 - 0:17

108

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Epimorphism in simplex category is split

Published on 26 Apr 2026 - 14:54

123

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Eilenberg-Zilber's lemma existence

Published on 25 Mar 2026 - 7:41

112

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Show that $\overline\beta$ is epimorphism without diagram chasing

Published on 25 Mar 2026 - 7:49

92

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How to prove that a group affords no epimorphism in $S_3$

Published on 25 Mar 2026 - 7:44

37

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What does "factoring" mean in the context of ring epimorphisms?

Published on 25 Mar 2026 - 11:06

32

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Does an epimorphism factor any morphism with the same codomain?

Published on 25 Mar 2026 - 9:23

38

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Linearly Compact Module in $R-Mod$

Published on 01 Apr 2026 - 17:22

166

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In the category Haus, a continuous map $f:A \rightarrow B$ is an epimorphism iff $f(A)$ is dense in $B$

Published on 25 Apr 2026 - 15:30

110

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Are monos in epis and epis in monos also monic or epic in the entire category?

Published on 24 Apr 2026 - 16:53

39

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Meaning of projection onto one factor in $0\to A^{r-1}\to A^r\to A\to 0$

Published on 25 Mar 2026 - 7:46

49

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Is every additive map $R$-linear if $ℤ \to R$ is an epimorphism?

Published on 25 Mar 2026 - 11:13

30

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Is the pullback functor $q^*$ essentially injective when $q$ is a regular epimorphism?

Published on 11 Apr 2026 - 20:14

772

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Let $F$ be a field and $f: \mathbb{Z} \to F$ be a ring epimorphism.

Published on 25 Mar 2026 - 7:44

568

Views

Invariant dimension property and a ring epimorphism

Published on 25 Mar 2026 - 7:41

List Question

A monomorphism and epimorphism that is neither injective nor surjective(set-theoretically)

Epimorphism in simplex category is split

Eilenberg-Zilber's lemma existence

Show that $\overline\beta$ is epimorphism without diagram chasing

How to prove that a group affords no epimorphism in $S_3$

What does "factoring" mean in the context of ring epimorphisms?

Does an epimorphism factor any morphism with the same codomain?

Linearly Compact Module in $R-Mod$

In the category Haus, a continuous map $f:A \rightarrow B$ is an epimorphism iff $f(A)$ is dense in $B$

Are monos in epis and epis in monos also monic or epic in the entire category?

Meaning of projection onto one factor in $0\to A^{r-1}\to A^r\to A\to 0$

Is every additive map $R$-linear if $ℤ \to R$ is an epimorphism?

Is the pullback functor $q^*$ essentially injective when $q$ is a regular epimorphism?

Let $F$ be a field and $f: \mathbb{Z} \to F$ be a ring epimorphism.

Invariant dimension property and a ring epimorphism

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