numberwithin

[Chip Brock]

hi

Has something happened to the \numberwithin command?

If I add:

\newcounter{problemcounter}

\numberwithin{problemcounter}{chapter}

\newenvironment{problem}[1]{%

  \refstepcounter{problemcounter}

    \addcontentsline{lol}{problem}{\protect\numberline{theproblemcounter} #1}

    \textbf{problem \theproblemcounter. #1}\par}

to the preamble, I get an 

!  Undefined control sequence.

<recently read>   \numberwithin

                                                      {problemcounter}{chapter}

?

thanks

Ray

[Kevin Godby]

Hello.

I don't think anything in the Tufte-LaTeX document classes would
affect \numberwithin. It looks like it's not defined. You might
double-check that you've included \usepackage{amsmath} prior to the
block of code you provided above.

If you still have problems with this, could you send me a complete
example (from \documentclass to \end{document}) that illustrates the
problem?

Thanks!

--Kevin

[chip]

I'm sorry...I thought I had replied! Yes...somehow, I had failed to
include amsmath when I converted my project to tufte-latex. That was
the problem. Thanks...