How to write given equation in LaTex?

The entire expression, and not just the \otimes term, must be in math mode:

$r_{i,j}=\min \lbrace\vert x_{i,j}\otimes K_{p} \vert : p=1,\dots, 4 \rbrace$

Note that I would use \otimes, not \bigotimes. And, do write \min rather than just min.

Addendum: If you wanted to give more visual prominence to the curly braces that enclose the material to the right of the = symbol, you could enlarge them a bit via \bigl and \bigr modifiers:

$r_{i,j}=\min \bigl\lbrace\vert x_{i,j}\otimes K_{p} \vert : p=1,\dots, 4 \bigr\rbrace$

$r_{i,j}=\min \bigl\lbrace\vert x_{i,j}\otimes K_{p} \vert : p=1,\dots, 4 \bigr\rbrace$


\documentclass{article}
\usepackage{amsmath}
\begin{document}

    $r_{i,j}=\min\big\{\big| x_{i,j}\otimes K_{p} \big| : p=1,\dots, 4\big\}$   

\end{document}

enter image description here


Well, IMHO I would code the formula as follows:

\( r_{i,j}=\min
  \bigl\{\lvert x_{i,j}\otimes K_{p} \rvert : p=1,\dots,4\bigr\} \)

(I am assuming that the amsmath package is being used, of course). But I noticed that in picture you posted the “min” operator is followed by a thin space; this can be obtained by writing

\( r_{i,j}=\min\,
  \bigl\{\lvert x_{i,j}\otimes K_{p} \rvert : p=1,\dots,4\bigr\} \)

But I do not recommend doing so.

Tags:

Math Mode

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