%0 Journal Article %A Kasagawa, Ryoji %T A second cohomology class of the symplectomorphism group with the discrete topology %J Algebraic and Geometric Topology %D 2018 %P 187-219 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2018.18.187/ %R 10.2140/agt.2018.18.187 %F 10_2140_agt_2018_18_187