Here are some illustrations of chain complexes: Chain Complexes https://www.mathphysicsbook.com/mathematics/algebraic-topology/constructing-surfaces-within-a-s

Here are some illustrations of chain complexes: Chain Complexes https://www.mathphysicsbook.com/mathematics/algebraic-topology/constructing-surfaces-within-a-space/chain-complexes/ https://www.mathphysicsbook.com/mathematics/algebraic-topolo... Homology for Normal Humans http://isomorphismes.tumblr.com/post/127950269154/graded-chain-complex-of-a-simplex-homology http://isomorphismes.tumblr.com/post/127950269154/graded-cha...