Author: Urs Format: MarkdownItexSome trivial minimum, just for completeness, so that we can hyperlink the word "pullback" where it refers to pullback in cohomology.
<a href="https://ncatlab.org/nlab/revision/pullback+in+cohomology/1">v1</a>, <a href="https://ncatlab.org/nlab/show/pullback+in+cohomology">current</a>
Some trivial minimum, just for completeness, so that we can hyperlink the word “pullback” where it refers to pullback in cohomology.