<div id="comment:0"></div> Add functionality to sage to compute the effect of a simplicial complex morphism on homology and cohomology. This patch will rely on fuctionality in #6099, #6100, #6102, and #5882. Depends on #19179 Depends on #6102 Depends on #18175 CC: @jhpalmieri @nthiery @simon-king-jena Component: **algebraic topology** Author: **John Palmieri** Branch/Commit: **[`e9150ca`](https://github.com/sagemath/sagetrac-mirror/commit/e9150caff3d157cadd739042461d972c9d5952f1)** Reviewer: **Travis Scrimshaw** _Issue created by migration from https://trac.sagemath.org/ticket/6101_