From 5b50e2ed51c37f959a06923c8d7dfd99f0c926e4 Mon Sep 17 00:00:00 2001
From: Eduardo Julian
Date: Fri, 22 Oct 2021 00:54:07 -0400
Subject: FIXED analysis extensions got reset and new ones would be
 unavailable.

---
 documentation/bookmark/math.md | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'documentation/bookmark/math.md')

diff --git a/documentation/bookmark/math.md b/documentation/bookmark/math.md
index d27280e04..760e4d177 100644
--- a/documentation/bookmark/math.md
+++ b/documentation/bookmark/math.md
@@ -1,3 +1,7 @@
+# Logarithm
+
+1. [Logarithm: The Complete Guide (Theory & Applications)](https://mathvault.ca/logarithm-theory/)
+
 # Ball arithmetic
 
 1. [Ball arithmetic](http://www.texmacs.org/joris/ball/ball.html)
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