How To Write A Approximately Equal Symbol(≈) In LaTeX?

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In math, the “approximately equal” sign is made of two similar symbols. In LaTeX, you can create this sign using the commands \approx and \thickapprox.

These commands are part of the amssymb package, which offers many math symbols.

Basic Symbols for Approximation

To use these symbols in LaTeX, add the amssymb package to the start of your document. Here is an example of how to use \approx and \thickapprox in a LaTeX document:

\documentclass{article} \usepackage{amssymb} \begin{document} \[ p \approx q \] \[ p \thickapprox q \] \end{document}

Output:

In this program, the \approx and \thickapprox commands create symbols for approximately equal. The amssymb package is required, especially for \thickapprox.

Advanced usage with combined symbols

LaTeX allows approximation symbols to be combined with relational operators like less than, greater than, and equals, which is useful for complex mathematical expressions.

\documentclass{article} \usepackage{amssymb} \begin{document} \[ \begin{matrix} \lessapprox & \gtrapprox & \approxeq \\[6pt] \lnapprox & \gnapprox & \precapprox \\[6pt] \succapprox & \precnapprox & \succnapprox \end{matrix} \] \end{document}

Output:

use more than one symbol with approximate symbols

Symbols like \lessapprox and \gtrapprox combine approximation with relational operators. To use them, include the amssymb package in your document.

Symbol	Command	Description
\(\approx\)	\approx	Represents that two quantities are almost equal.
\(\thickapprox\)	\thickapprox	A thicker version of the almost equal symbol, making it visually distinct.
\(\lessapprox\)	\lessapprox	Indicates that one quantity is less than and almost equal to another.
\(\gtrapprox\)	\gtrapprox	Indicates that one quantity is greater than and almost equal to another.
\(\approxeq\)	\approxeq	Another variation of the almost equal symbol.
\(\lnapprox\)	\lnapprox	Indicates that one quantity is less than and not almost equal to another.
\(\gnapprox\)	\gnapprox	Indicates that one quantity is greater than and not almost equal to another.
\(\precapprox\)	\precapprox	Indicates a preceding and almost equal relationship.
\(\succapprox\)	\succapprox	Indicates a succeeding and almost equal relationship.
\(\precnapprox\)	\precnapprox	Indicates a preceding and not almost equal relationship.
\(\succnapprox\)	\succnapprox	Indicates a succeeding and not almost equal relationship.