Reiser, Philipp 2024 The twisted suspension of a manifold is obtained by surgery along the fibre of a principal circle bundle over the manifold. It generalizes the spinning operation for knots and preserves various topological properties. In this article, we show that Riemannian metrics of positive Ricci curvature can be lifted along twisted suspensions. As an application we show that the maximal symmetry rank of a closed, simply-connected Riemannian manifold of positive Ricci curvature is $(n-2)$ in all dimensions $n\geq 4$. Further applications include simply-connected 6-manifolds whose homology has torsion, (rational) homology spheres in all dimensions at least 4, and manifolds with prescribed third homology. application/pdf https://folia.unifr.ch/global/documents/330422 https://folia.unifr.ch/documents/330422/files/positivericcicurvatureontwistedsuspensions_published.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1093/imrn/rnae231 info:eu-repo/semantics/altIdentifier/issn/1073-7928 info:eu-repo/semantics/altIdentifier/issn/1687-0247 info:eu-repo/semantics/openAccess CC BY International Mathematics Research Notices. - Oxford, UK : Oxford University Press. - 2024, no. 22, p. 14115–14137 Positive Ricci curvature torus actions principal circle bundle surgery info:eu-repo/classification/udc/51 Positive Ricci Curvature on Twisted Suspensions http://purl.org/coar/resource_type/c_6501