Computing with the -canonical class
Lucile Vandembroucq
University of Minho, Braga, Portugal
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Abstract
The -canonical class introduced by Costa and Farber is a very useful tool for studying the maximality of , especially in the context of closed manifolds. We survey some calculations where this class has been used to prove the maximality of . We also give some non-maximality results which have been established for manifolds with abelian fundamental group.