How do you denote a tilde(ã, õ, and ñ) symbol over a letter in LaTeX?

There are many uses of tiled symbol. But, the most important thing is to use the tilde symbol over a letter.

In latex, \tilde and \~{} are two important commands for this.

Symbol Tilde symbol over a letter
Type Multipurpose
Package Default
Commands \tilde, \~{}
Example \tilde{a} → ã
\documentclass{article}
\begin{document}
  $$ \tilde{a} $$
  $$ \tilde{n} $$
  $$ \tilde{o} $$
\end{document}

Output :

ã
ñ
õ

But, \~{} command must be used in text mode. For example

\documentclass{article}
\begin{document}
   tilde over a : \~{a} \\
   tilde over o : \~{o} \\
   tilde over n : \~{n}
\end{document}

Output :

tilde over a : ã
tilde over n : ñ
tilde over o : õ

Notice if you have knowledge of Spanish and Portuguese, this tilde symbol is used over special n, a, and o letters. For example

\documentclass{article}
\begin{document}
  % use tilde symbol in Spanish
    ara$\tilde{n}$a \\ [6pt]
    ni\~{n}o \\ [6pt]
  % use tilde symbol in Portuguese
   canç$\tilde{a}$o \\ [6pt]
   var\~{o}es  
\end{document}

Output :

latex tilde symbol over a letter 

You look at the output above when you pass a character(n, a, and o) in the \tilde command. Then, convert to italic style is not entirely accurate.

However, \~{} command does not change the style of the font. and this is the best practice in the case of language.

Use responsive tilde symbol over a letter

However, there are some characters that are larger than the size of other characters, so it is best practice to use \widetilde commands instead of \tilde and \~{} commands.

\documentclass{article}
\begin{document}
  $$ \tilde{m} $$ 
  $$ \tilde{w} $$
 % use widetilde command
  $$ \widetilde{m} $$ 
  $$ \widetilde{w} $$ 
\end{document}

Output :

Use widetilde command for responsive tilde symbol

Because look at the output above, the size of the tilde symbol is also constant in the case of \tilde and \~{} commands. However, in the case of the \widetilde command, the tilde symbol is responsibly placed over a letter.

In my opinion, the \widetilde command is best for using tilde symbols on all capital letters.

\documentclass{article}
\begin{document}
  $$ \tilde{N} \;\; \widetilde{N} $$ 
  $$ \tilde{A} \;\; \widetilde{A} $$
  $$ \tilde{O} \;\; \widetilde{O} $$ 
\end{document}

Output :

Use responsive tilde symbol over a capital letter

However, you must use the \widetilde command for multiple characters. For example

\documentclass{article}
\begin{document}
  $$ \tilde{ac} \;\; \widetilde{ac} $$ 
  $$ \tilde{pq} \;\; \widetilde{pq} $$
  $$ \tilde{abc} \;\; \widetilde{abc} $$ 
\end{document}

Output :

use tilde symbol over multiple letter

One request!

Don't forget to share this tutorial if I have added any value to your education life with this tutorial.

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