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Thank you! I was looking for this.

Then , $∙_{i \in I} V_{i}$ , $*_{i \in I} V_{i}$ can be written via

$\newcommand{\bigplus}{\mathop{\Large+\normalsize}} \bigplus_{i \in I}Vi$
$\newcommand{\bigdot}{\mathop{\Large•\normalsize}} \bigdot_{i \in I}Vi$
$\newcommand{\bigmult}{\mathop{\Large*\normalsize}} \bigmult_{i \in I}Vi$

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6 How to write a big cartesian product symbol in MathJax

by Matthias G. Mayer

11th Jan 2023

1 min read

6

This short post is about how to write something like $\times_{i \in I} V_{i}$ and $\times i \in I V_{i}$

MathJax doesn't allow picture environments so we can't define a new command that draws a cross. The solution is simple: Enlarge the normal \times command.

Paste this in a math environment at the top of the document:

\newcommand{\bigtimes}{\mathop{\Large\times\normalsize}}

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How to write a big cartesian product symbol in MathJax

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[-]niplav2y40

Thank you! I was looking for this.

Then , $∙_{i \in I} V_{i}$ , $*_{i \in I} V_{i}$ can be written via

$\newcommand{\bigplus}{\mathop{\Large+\normalsize}} \bigplus_{i \in I}Vi$
$\newcommand{\bigdot}{\mathop{\Large•\normalsize}} \bigdot_{i \in I}Vi$
$\newcommand{\bigmult}{\mathop{\Large*\normalsize}} \bigmult_{i \in I}Vi$

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