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\usepackage[]{nomencl}
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\renewcommand{\nomname}{Real Analysis Glossary}
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\begin{document}

\emph{Name:} \rule[-3pt]{20ex}{1pt}

\nomenclature{\bf Real Number}{include both rational numbers, such as $42$ and
               $\frac{-23}{129}$, and irrational numbers,
               such as $\pi$ and the square root of two; or,
               a real number can be given by an infinite decimal
               representation, such as $2.4871773339\ldots$ where
               the digits continue in some way; or, the real
               numbers may be thought of as points on an infinitely
               long number line}

\nomenclature{\bf Linux}{is a generic term referring to the family of Unix-like
               computer operating systems that use the Linux kernel}

\nomenclature{\bf naive}{is a French loanword (adjective, form of na\"{\i}f)
               indicating having or showing a lack of experience,
               understanding or sophistication}

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\markboth{Glossary}{Glossary}
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