activity
20192026
most citedGeneralized Surgery on Riemannian Manifolds of Positive Ricci Curvature

9 citations · 18 across the 16 of their papers we have counts for

collaborators

16 papers

math.DG2026

Local Topology of Riemannian Manifolds with Lower Intermediate Ricci Curvature Bounds

Philipp Reiser, Masoumeh Zarei

We prove a vanishing theorem for the local Betti numbers of closed, -dimensional Riemannian manifolds with a lower volume bound, an upper diameter bound, and a lower intermediat…

math.GT2026

Free Circle Actions and Positive Ricci Curvature on Manifolds with the Cohomology Ring of

Philipp Reiser

We classify which of the 672 oriented diffeomorphism types of closed, simply-connected spin 7-manifolds with the cohomology ring of admit a free circle action. In a…

math.DG2025

Ricci curvature and minimal hypersurfaces with large Betti numbers

Davi Maximo, Philipp Reiser, Daniele Semola

In any dimension we construct a sequence of closed -dimensional Riemannian manifolds with positive Ricci curvature admitting embedded two-sided minimal hypersurfa…

math.DG2024

Surgery and positive Bakry-Émery Ricci curvature

Philipp Reiser, Francesca Tripaldi

We consider the problem of preserving weighted Riemannian metrics of positive Bakry-Émery Ricci curvature along surgery. We establish two theorems of this type: One for connected s…

math.DG2024

Examples of tangent cones of non-collapsed Ricci limit spaces

Philipp Reiser

We give new examples of manifolds that appear as cross sections of tangent cones of non-collapsed Ricci limit spaces. It was shown by Colding-Naber that the homeomorphism types of…

math.DG2024★ 2 cited

Positive Ricci curvature on connected sums of fibre bundles

Philipp Reiser

We consider the problem of preserving positive Ricci curvature along connected sums. In this context, based on earlier work by Perelman, Burdick introduced the notion of core metri…

math.DG2024

Positive Ricci Curvature on Twisted Suspensions

Philipp Reiser

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 pres…

math.DG2023★ 1 cited

Positive intermediate Ricci curvature on connected sums

Philipp Reiser, David J. Wraith

We consider the problem of performing connected sums in the context of positive intermediate Ricci curvature. We show that such connected sums are possible if the manifold…

math.DG2023

A generalization of the Perelman gluing theorem and applications

Philipp Reiser, David J. Wraith

We extend a positive Ricci curvature gluing theorem of Perelman to a range of positive intermediate curvature conditions, ranging from positive scalar curvature up to (and includin…

math.GT2023★ 3 cited

Free torus actions and twisted suspensions

Fernando Galaz-García, Philipp Reiser

We express the total space of a principal circle bundle over a connected sum of two manifolds in terms of the total spaces of circle bundles over each summand, provided certain con…

math.DG2022★ 1 cited

Positive Intermediate Ricci Curvature on Fibre Bundles

Philipp Reiser, David J. Wraith

We prove a canonical variation-type result for submersion metrics with positive intermediate Ricci curvatures. This can then be used in conjunction with surgery techniques to estab…

math.DG2022★ 1 cited

Metrics of Positive Ricci Curvature on Simply-Connected Manifolds of Dimension

Philipp Reiser

A consequence of the surgery theorem of Gromov and Lawson is that every closed, simply-connected 6-manifold admits a Riemannian metric of positive scalar curvature. For metrics of…

math.DG2022★ 1 cited

Intermediate Ricci curvatures and Gromov's Betti number bound

Philipp Reiser, David J. Wraith

We consider intermediate Ricci curvatures on a closed Riemannian manifold . These interpolate between the Ricci curvature when and the sectional curvature when…

math.DG2021★ 9 cited

Generalized Surgery on Riemannian Manifolds of Positive Ricci Curvature

Philipp Reiser

The surgery theorem of Wraith states that positive Ricci curvature is preserved under surgery if certain metric and dimensional conditions are satisfied. We generalize this theorem…

math.DG2020

Cohomogeneity One Manifolds and Homogeneous Spaces of Positive Scalar Curvature

Georg Frenck, Fernando Galaz-Garcia, Philipp Reiser

We characterize cohomogeneity one manifolds and homogeneous spaces with a compact Lie group action admitting an invariant metric with positive scalar curvature.

math.DG2019

Moduli Spaces of Metrics of Positive Scalar Curvature on Topological Spherical Space Forms

Philipp Reiser

Let be a topological spherical space form, i.e. a smooth manifold whose universal cover is a homotopy sphere. We determine the number of path components of the space and moduli…