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egreg
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I'm a mathematician working in algebra. I've been using TeX since 1987, but couldn't write my Ph.D. thesis with it. Sob!

I teach LaTeX at my university, besides the mathematics courses. I'm the author of some LaTeX packages and even of one Plain TeX package. At my site it's possible to download my book on LaTeX programming (in Italian, sorry).

Here's my motto for TeX.SX:

Pronto prontissimo son come il fulmine: sono il factotum della città. (From "Il barbiere di Siviglia", music by Gioachino Rossini, libretto by Cesare Sterbini.)

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Top posts
View all questions and answers
506
Lengths and when to use them
Jan 18, 2012
479
What are the different kinds of boxes in (La)TeX?
Nov 23, 2012
459
How to add a forced line break inside a table cell
Jun 2, 2011
439
Hyperref - Token not allowed
Apr 26, 2012
344
Difference between \textwidth, \linewidth and \hsize
Apr 29, 2011
310
What's the difference between \mathrm and \operatorname?
Mar 18, 2012
284
fontenc vs inputenc
Feb 15, 2012
262
'Floor' and 'ceiling' functions
Jan 25, 2012
247
When should we use \begin{center} instead of \centering?
Jul 20, 2011
244
How to typeset a "small" non-breaking space
Oct 10, 2012
Top Meta posts
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TeX new site theme is live
60
Why does TeX require such elaborate MWE:s
50
Many thanks to Martin Scharrer
41
Serial upvoting reversed
41
Double backslashes disappear from code
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122
What is the antiderivative of $e^{-x^2}$
67
Why $\{\mathbf{0}\}$ has dimension zero?
60
Is there another way to solve this integral?
59
A multiplication algorithm found in a book by Paul Erdős: how does it work?
58
$f(a+b)=f(a)+f(b)$ but $f$ is not linear