diff --git a/latex-math/.gitignore b/latex-math/.gitignore
index 536acab..09af48f 100644
--- a/latex-math/.gitignore
+++ b/latex-math/.gitignore
@@ -1,6 +1,7 @@
 latex-math.tex
 .Rproj.user
 latex-math.Rproj
+README.html
 
 *.fls
 *.log
diff --git a/latex-math/basic-math.tex b/latex-math/basic-math.tex
index 8e574d1..df3e12a 100644
--- a/latex-math/basic-math.tex
+++ b/latex-math/basic-math.tex
@@ -26,6 +26,8 @@
 \newcommand{\sign}{\operatorname{sign}} % sign, signum
 \newcommand{\I}{\mathbb{I}} % I, indicator
 \newcommand{\order}{\mathcal{O}} % O, order
+\newcommand{\bigO}{\mathcal{O}} % Big-O Landau
+\newcommand{\littleo}{{o}} % Little-o Landau
 \newcommand{\pd}[2]{\frac{\partial{#1}}{\partial #2}} % partial derivative
 \newcommand{\floorlr}[1]{\left\lfloor #1 \right\rfloor} % floor
 \newcommand{\ceillr}[1]{\left\lceil #1 \right\rceil} % ceiling
diff --git a/latex-math/latex-math.pdf b/latex-math/latex-math.pdf
index f3a1974..ec98e9b 100644
Binary files a/latex-math/latex-math.pdf and b/latex-math/latex-math.pdf differ