Latex diagonal dots are the sum of three dots located along the diagonal. This diagonal dots symbol is represented by the \ddots command.
Properties | Value |
Symbol | Diagonal dots |
Package | Default |
Command | \ddots |
Argument | No |
Example | \ddots → |
These diagonal dots are used to represent a matrix with n number of elements.
\documentclass{article}
\begin{document}
$$\ddots$$
\end{document}
Output :
And you see the diagonal matrix where the elements of the matrix are arranged just along the diagonal. In that case, only the latex diagonal dots symbol is used.
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{bmatrix}
a_{1} & & \\
& \ddots & \\
& & a_{n}
\end{bmatrix}
\end{document}
Output :
Inverse diagonal dots
Inverse diagonal dots are located in a diagonal direction from south-west to north-east.
Latex has more than one command and method to represent this inverse diagonal dots symbol.
Package | Command |
MySymbol | \udots |
Mathdots | \iddots |
yhmath | \adots |
graphicx | \reflectbox{…} |
\documentclass{article}
\usepackage{graphicx}
\usepackage{yhmath}
\usepackage{mathdots}
\usepackage{MnSymbol}
\begin{document}
$$ \iddots $$
$$ \udots $$
$$ \adots $$
$$ \reflectbox{$\ddots$}$$
\end{document}
Output :
$\ddots$ is passed as an argument in \reflectbox command which converts diagonal dots symbol to inverse diagonal dots symbol. And for this you need to take the help of graphicx package.