[hackers] [libzahl] Exponentiation: clarification of a mathematical expression || Mattias Andrée

[git]

commit c98c0af42f56d0859d6f3f5e3743945906c681c8
Author:     Mattias Andrée <maand...@kth.se>
AuthorDate: Thu May 12 01:23:28 2016 +0200
Commit:     Mattias Andrée <maand...@kth.se>
CommitDate: Thu May 12 01:23:49 2016 +0200

    Exponentiation: clarification of a mathematical expression
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/doc/arithmetic.tex b/doc/arithmetic.tex
index efadf17..e90f607 100644
--- a/doc/arithmetic.tex
+++ b/doc/arithmetic.tex
@@ -191,7 +191,11 @@ can be expressed as a simple formula
 \]
 
 \noindent
-This is a natural extension to the observations
+This is a natural extension to the
+observations\footnote{The first of course being
+that any non-negative number can be expressed
+with the binary positional system. The latter
+should be fairly self-explanatory.}
 
 \vspace{-1em}
 \[ \hspace*{-0.4cm}