Author: Urs Format: MarkdownItexI gave the (counter-)example of the epimorphic ring inclusion $\mathbb{Z} \hookrightarrow \mathbb{Q}$ a numbered environment and a line of proof ([here](https://ncatlab.org/nlab/show/Ring#InclusionOfIntegersIntoRationalsIsEpimorphismOfRings))
<a href="https://ncatlab.org/nlab/revision/diff/Ring/8">diff</a>, <a href="https://ncatlab.org/nlab/revision/Ring/8">v8</a>, <a href="https://ncatlab.org/nlab/show/Ring">current</a>
I gave the (counter-)example of the epimorphic ring inclusion a numbered environment and a line of proof (here)
Author: J-B Vienney Format: MarkdownItexAdded link to [[Rig]]
<a href="https://ncatlab.org/nlab/revision/diff/Ring/9">diff</a>, <a href="https://ncatlab.org/nlab/revision/Ring/9">v9</a>, <a href="https://ncatlab.org/nlab/show/Ring">current</a>