Lemma 21.33.4. Let $(\mathcal{C}, \mathcal{O})$ be a ringed site. Given complexes $\mathcal{K}^\bullet , \mathcal{L}^\bullet , \mathcal{M}^\bullet $ of $\mathcal{O}$-modules there is a canonical morphism

of complexes of $\mathcal{O}$-modules functorial in both complexes.

## Comments (0)

There are also: