trying footnotes
Squashed 'algebra/' content from commit a98466a

git-subtree-dir: algebra
git-subtree-split: a98466a806a608f7a38b4dde0fdb486c07aa7210
Merge commit 'e7ccded53a671e4705f0f23507cda44020e6b04c' as 'algebra'
Squashed 'algebra/' changes from a98466a..6ee1fe6

6ee1fe6 test moving images

git-subtree-dir: algebra
git-subtree-split: 6ee1fe66c5a4510dd372413915e42e873a9e4174
Merge commit 'b8853967ebea439230bdedf0662a2cafd8caddbb'
moved image