\contentsline {chapter}{\numberline {1}Cohomology}{5}
\contentsline {section}{\numberline {1.1}CHR}{6}
\contentsline {section}{\numberline {1.2}SchurMultiplier}{6}
\contentsline {section}{\numberline {1.3}CoveringGroup}{6}
\contentsline {section}{\numberline {1.4}FirstCohomologyDimension}{6}
\contentsline {section}{\numberline {1.5}SecondCohomologyDimension}{6}
\contentsline {section}{\numberline {1.6}SplitExtension}{7}
\contentsline {section}{\numberline {1.7}NonsplitExtension}{7}
\contentsline {section}{\numberline {1.8}CalcPres}{7}
\contentsline {section}{\numberline {1.9}PermRep}{8}
\contentsline {section}{\numberline {1.10}Further Information}{8}