mjo-algebra.tex: describe the file in a comment at the top.

diff --git a/mjo-algebra.tex b/mjo-algebra.tex
index d70d9fd919fa1d39da8036953c03b3d52ce27426..010ab0512a5b719aeafdc40283eebff3b969b89c 100644 (file)
--- a/mjo-algebra.tex
+++ b/mjo-algebra.tex
@@ -1,3 +1,7 @@
+%
+% Abstract algebraic structures.
+%
+
 % Needed for \operatorname.
 \usepackage{amsopn}