3 http://hdl.handle.net/10338.dmlcz/153720 3 Poisson bivectors on infinite dimensional manifolds http://hdl.handle.net/10338.dmlcz/153722 Poisson bivectors on infinite dimensional manifolds On a higher spin generalization of the complex $\Pi $-operator http://hdl.handle.net/10338.dmlcz/153721 On a higher spin generalization of the complex $\Pi $-operator