Arrow with reversed head

Question

It is possible to draw an arrow, where the arrowhead is located at the right end of the arrow but pointing left (like the bottom one in the below picture)?

In particular, I am hoping to define a MathOperator (operator) that can be used just as \to.

Any input will be greatly appreciated!

Answer 1

You could start with something like this:

\documentclass{article}
 
\usepackage{tikz}
\newcommand{\ot}{\tikz[baseline=-.5ex] \draw[-to reversed] (0,0) -- (1em,0);} 


\begin{document}

    \[ a \ot b \]

\end{document}