Twistor spaces for hyper-Kähler manifolds with torsion

A reduction scheme for phase spaces with

A reduction scheme for phase spaces with almost Kähler symmetry: Regularity results for momentum level sets

✍ Martin Otto 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 971 KB

For phase spaces with a symmetry of an almost Köhler structure, extending the symplectic structure of phase space, a scheme of reduction 'is proposed, in which the decomposition into level sets of a momentum mapping is supplemented by a preliminary reduction with respect to orbit type under the acti