LaTeX Equal as Defined (=:) - Complete Guide

The equal as defined symbol (=:) indicates the right side is defined as the left.

Symbol Preview

=:

Equal as Defined

LaTeX Code

No package required

Recommended
=:

Equal as defined

No package required

Recommended
\eqcolon

Equals colon

What is the LaTeX Equal as Defined?

Used when the right side is defined to equal the left side.

How to Use Equal as Defined in LaTeX

Method 1: Using =:

βœ…No package required

Equal as defined

Example: Using =:

latex
\documentclass{article}

\begin{document}

% Using the Equal as Defined
Text with =:

\end{document}

Method 2: Using \eqcolon

βœ…No package required

Equals colon

Example: Using \eqcolon

latex
\documentclass{article}

\begin{document}

% Using the Equal as Defined
Text with \eqcolon

\end{document}

Common Use Cases

The Equal as Defined symbol is commonly used in the following contexts:

Definition

Right side is defined by left side.

Code

$\sqrt{2} =: r$

Output

√2 =: r

Complete Examples

Definition Example

Equal as defined operator

latex
\documentclass{article}
\begin{document}

Let $\sqrt[n]{a} =: \sqrt[n]{a}$.

\end{document}

Frequently Asked Questions about Equal as Defined (=:)

Which LaTeX code should I use for Equal as Defined?

For the Equal as Defined symbol (=:), we recommend using the method marked as "Recommended" above. However, the best method depends on your specific needs:

  • =:: Equal as defined
  • \eqcolon: Equals colon

Where can I use the Equal as Defined symbol?

The Equal as Defined symbol (=:) is typically used:

  • In mathematical equations (math mode)
  • In regular text (if supported)
  • In various LaTeX environments

Can I use the Equal as Defined symbol in display mode?

Yes, the Equal as Defined symbol (=:) works in display mode (between $$ $$). This allows you to render the symbol on its own line with better visibility.

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