The Stacks project

Remark 56.4.2. With $A$, $B$, $F$, and $F'$ as in Lemma 56.4.1. Observe that the tensor product of two finitely presented modules is finitely presented, see Algebra, Lemma 10.12.14. Thus we may endow $\text{Mod}^{fp}_ A$, $\text{Mod}^{fp}_ B$, $\text{Mod}_ A$, and $\text{Mod}_ B$ with the usual monoidal structure given by tensor products of modules. In this case, if $F$ is a functor of monoidal categories, so is $F'$. This follows immediately from the fact that tensor products of modules commutes with filtered colimits.


Comments (0)


Post a comment

Your email address will not be published. Required fields are marked.

In your comment you can use Markdown and LaTeX style mathematics (enclose it like $\pi$). A preview option is available if you wish to see how it works out (just click on the eye in the toolbar).

Unfortunately JavaScript is disabled in your browser, so the comment preview function will not work.

All contributions are licensed under the GNU Free Documentation License.




In order to prevent bots from posting comments, we would like you to prove that you are human. You can do this by filling in the name of the current tag in the following input field. As a reminder, this is tag 0GP5. Beware of the difference between the letter 'O' and the digit '0'.