X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/book_chic.git/blobdiff_plain/9e9b8dc87f77206ba17bb278dc62b2bee644f487..aa1b170823c8a4d945f63afb79f822f5d049fcd6:/book.tex

diff --git a/book.tex b/book.tex
index 0cdc1fd..83adc5b 100644
--- a/book.tex
+++ b/book.tex
@@ -20,6 +20,7 @@
 \usepackage{type1cm}
 \usepackage{caption}
 \usepackage[utf8]{inputenc}
+\usepackage{amssymb}
 
 \usepackage{makeidx}         % allows index generation
 \usepackage{graphicx}        % standard LaTeX graphics tool
