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Hi Juan,
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<div class="">On Jul 14, 2016, at 11:56 AM, juan tolosa <<a href="mailto:juantolo@me.com" class="">juantolo@me.com</a>> wrote:</div>
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<div class="">Even more basic things, like matrix commands (\pmatrix{…} and the like) are not recognized by LaTeX,
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<div>The LaTeX answer is: \usepackage{amsmath}</div>
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<div>Then use \begin{matrix} … \end{pmatrix} .</div>
<div>Doing the editing to get this from \pmatrix{….} is not that hard.</div>
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<div>I have to do it all the time, with assignment questions and solutions from my teaching colleagues,</div>
<div>who are at a similar level to what you described concerning yourself.</div>
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<div class="">and are not easily translatable. So, I am still struggling with plain TeX.</div>
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<div>AMSTeX used to be very popular with my math colleagues, but the amsmath package *is* </div>
<div>the adaptation of that to LaTeX. </div>
<div>So all those Plain TeX and AMSTeX extensions and macros should have an equivalent.</div>
<div>Frequently the LaTeX commands actually produce better, improved layouts than what AMSTeX did. </div>
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<div class="">Best,</div>
<div class=""> Juan</div>
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<div class="">BTW. If you are having trouble finding pdftex.def get it this way:</div>
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<div style="margin: 0px; font-size: 11px; font-family: Menlo;" class="">SCI:~ ross$ kpsewhich pdftex.def</div>
<div style="margin: 0px; font-size: 11px; font-family: Menlo;" class="">/usr/local/texlive/2016/texmf-dist/tex/latex/pdftex-def/pdftex.def</div>
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<div class="">Also, David Carlisle email’d me saying that the latest version of it, updated since you last did,</div>
<div class="">should no longer give this problem. That line ...</div>
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<div class="">… is not in the current version in the sources<br class="">
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<a href="https://github.com/latex3/graphics-def/blob/master/pdftex.def" class="">https://github.com/latex3/graphics-def/blob/master/pdftex.def</a><br class="">
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<div class="">and the test file works for me.<br class="">
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<div class="">That release was pushed to ctan a couple of days ago, so should be getting to texlive update<br class="">
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<div class="">any day now, or you can get the file from the above link.<br class="">
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<div class="">David<br class="">
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<div style="font-family: Helvetica; orphans: auto; widows: auto;" class="">Hope this helps.</div>
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<div style="font-family: Helvetica; orphans: auto; widows: auto;" class=""><span class="Apple-tab-span" style="white-space: pre;"></span>Ross</div>
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<span class="Apple-style-span" style="font-size: 9px;"><b class=""><span style="font-size: 9pt;" class="">Dr Ross Moore</span></b></span></div>
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