\section{Theory}
% Principles

In this chapter the theory behind polygon simplification will be explained. The simplification process is part of generalization in cartography. So first a few words about it will be dropped do give a broad overview about the topic. It will be clarified which goals drive the reducing of data quantity, especially in the context of web applications. Then the data formats will be explained that make up the data. From there a closer look can be taken how the simplification can be accomplished. 
