LaTeX.org

I'm getting "Badbox - Overfull \hbox (4.42519pt too wide) in paragraph lines 198--199" on this:

From Example~\ref{origEx2}, with $s = 2^6-6$, we get the following: $T_{58}(2^{2^6}) = (2^6)T_{58}(2) = (2^6)2^{58} = 2^{64}$.

and I can't figure out why, or how to fix it. I've gotten this before when ...

But here is something that may be related to hyperref. I think I started getting warnings on this line after I added hyperref:

\section{The sets $T^*(s)$ for various $s$}

Token not allowed in a PDF string (PDFDocEncoding):(hyperref) removing 'superscript' (2 of these)
Token not allowed in a PDF ...

Yes, that works. Thank you, there is a lot to know about TeX, etc.

Hello, I'm new here and have been using LaTeX in a small way for a few months, using Texmaker.

I adapted this line from someone else's TeX file:

\href{mailto:jud@xyz.com}{\tt jud@xyz.com}

Texmaker gives the error message:
! Undefined control sequence.<recently read> \href \href
and it puts all ...