[latex] Getting the error "Missing $ inserted" in LaTeX

I try to write the following in latex:

\begin{itemize}
    \item \textbf{insert(element|text)} inserts the element or text passed at the start of the selection.
    \item \textbf{insert_after(element|text)} inserts the element or text passed at the end of the selection.
    \item \textbf{replace(element|text)} replaces the selection with the passed text/element.
    \item \textbf{delete()} deletes the selected text.
    \item \textbf{annotate(name,value)} annotates the selected text with the passed name and value-pair. This can either be a hidden meta-data about the selection, or can alter the visible appearance.
    \item \textbf{clear_annotation()} removes any annotation for this specific selection.
    \item \textbf{update_element(value)} performs an update of the element at the selection with the passed value.
\end{itemize}

For some reason, I get a bunch of errors. I think there is something with the use of the word "insert". I get errors like "Missing $ inserted", so it seems like the parses tries to fix some "errors" on my parts. Do I need to escape words like "insert", how do I do that?

In my code, when I got the error, I checked the possible source, In a line, I had typed a beginning \[ and an ending \] due to which the error of missing $ appeared though I tried using $ for both the brackets. Removing the brackets or using $[$ instead of $\[$ solved my problem. If you've something like that, try altering.

You can also get this error if you use special character greek letters like \alpha \beta and so on outside of math mode. After i wrapped them in \(...\) the error was gone.

I had this problem too. I solved it by removing the unnecessary blank line between equation tags. This gives the error:

\begin{equation}
P(\underline{\hat{X}} | \underline{Y}) = ...

\end{equation}

while this code compiles succesfully:

\begin{equation}
P(\underline{\hat{X}} | \underline{Y}) = ...
\end{equation}

I had the same problem - and I have read all these answers, but unfortunately none of them worked for me. Eventually I tried removing this line

%\usepackage[latin1]{inputenc}

and all errors disappeared.

also, I had this problem but the bib file wouldn't recompile. I removed the problem, which was an underscore in the note field, and compiled the tex file again, but kept getting the same errors. In the end I del'd the compiled bib file (.bbl I think) and it worked fine. I had to escape the _ using a backslash.

I had this symbol _ in the head of one table and the code didn't run, so I had to delete.

It's actually the underscores. Use \_ instead, or include the underscore package.

My first guess is that LaTeX chokes on | outside a math environment. Missing $ inserted is usually a symptom of something like that.

I think it gives the error because of the underscore symbol.

Note : underscore symbol should not be written directly, you have to write like as \_.

So fix these kind special symbol errors.