Author: Dmitri Pavlov Format: MarkdownItexAdded a description of slant products in cohomology.
Added references to Dold's book.
<a href="https://ncatlab.org/nlab/revision/diff/slant+product/5">diff</a>, <a href="https://ncatlab.org/nlab/revision/slant+product/5">v5</a>, <a href="https://ncatlab.org/nlab/show/slant+product">current</a>
Added a description of slant products in cohomology.
Added references to Dold’s book.