<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">George, isn't <span style="color:rgb(0,0,0);font-size:12.8000001907349px;font-family:arial,sans-serif">\boldsumlim</span> something you defined (p. 199 of 4th edition).</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Using TeXLive 2014 on MacOSX with xelatex, this minimal example works for me</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">
<p style="margin:0px">% !TEX TS-program = xelatex</p>
<p style="margin:0px">% !TEX encoding = UTF-8 Unicode</p>
<p style="margin:0px">\documentclass[11pt]{article}</p>
<p style="margin:0px">\usepackage{geometry} </p>
<p style="margin:0px">\geometry{letterpaper} </p>
<p style="margin:0px">\geometry{margin=0.75in}</p>
<p style="margin:0px">\usepackage{amsmath}</p>
<p style="margin:0px"><br></p>
<p style="margin:0px">\DeclareMathOperator{\boldsum}{\pmb{\sum}}</p>
<p style="margin:0px">\DeclareMathOperator*{\boldsumlim}{\pmb{\sum}}</p>
<p style="margin:0px"><br></p>
<p style="margin:0px">\begin{document}</p>
<p style="margin:0px"><br></p>
<p style="margin:0px">Some Text</p>
<p style="margin:0px"><br></p>
<p style="margin:0px">\begin{math}</p>
<p style="margin:0px">\boldsumlim_{i = 1}^{n} i^{2}</p>
<p style="margin:0px">\end{math}</p>
<p style="margin:0px"><br></p>
<p style="margin:0px">\end{document}</p><p style="margin:0px"><br></p><p style="margin:0px">BTW - Math into LaTeX has been a big help to me.</p><p style="margin:0px"><br></p><p style="margin:0px"><br></p><p style="margin:0px">Best Regards,</p><p style="margin:0px">John</p><p style="margin:0px"><br></p></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Apr 1, 2015 at 9:11 AM, George Gratzer <span dir="ltr"><<a href="mailto:gratzer@me.com" target="_blank">gratzer@me.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Working on Math into LateX, fifth edition, all of a sudden I could not typeset. <div>\boldsumlim is an undefined control sequence.</div><div><font face="Monaco" style="font-size:18px"><span style="font-size:14px"><br></span></font></div><div>I checked if the typing was corrupted. No. </div><div>So the definition was somehow corrupted. I reinstalled MacTeX. Did not help.</div><div><br></div><div>I’m out of ideas.</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>GG</div></font></span></div><br><br>
----------- Please Consult the Following Before Posting -----------<br>
TeX FAQ: <a href="http://www.tex.ac.uk/faq" target="_blank">http://www.tex.ac.uk/faq</a><br>
List Reminders and Etiquette: <a href="http://email.esm.psu.edu/mac-tex/" target="_blank">http://email.esm.psu.edu/mac-tex/</a><br>
List Archive: <a href="http://tug.org/pipermail/macostex-archives/" target="_blank">http://tug.org/pipermail/macostex-archives/</a><br>
TeX on Mac OS X Website: <a href="http://mactex-wiki.tug.org/" target="_blank">http://mactex-wiki.tug.org/</a><br>
List Info: <a href="https://email.esm.psu.edu/mailman/listinfo/macosx-tex" target="_blank">https://email.esm.psu.edu/mailman/listinfo/macosx-tex</a><br>
<br></blockquote></div><br></div>