added abstract

tex/paper.tex

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 \title{Alignment Finding}
 \maketitle
-\begin{abstract}\ednote{tbw}
+\begin{abstract}
+We present a method for finding morphisms between formal theories, both within as well as across libraries based
+on different logical foundations. These morphisms can yield both (more or less formal) \emph{alignments} between
+individual symbols as well as truth-preserving morphisms between whole theories. 
+
+In particular, we focus on an application of \emph{theory discovery},
+where a user can check whether a (part of a) formal theory already exists in some library, potentially avoiding duplication
+of work or suggesting an opportunity for refactoring.
+
+Furthermore, we present an implementation of both the algorithm as well as the specific use case in the MMT system.
 \end{abstract}
 
 \setcounter{tocdepth}{2}\tableofcontents\newpage