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An analogue of the convergence part of the Khintchine-Groshev theorem, as well as its multiplicative version, is proved for nondegenerate smooth submanifolds in $\mathbb{R}^n$. The proof combines methods from metric number theory with a new…

Number Theory · Mathematics 2007-05-23 V. Bernik , D. Kleinbock , G. A. Margulis

We show that the minimal hypersurface method of Schoen and Yau can be used for the ``quantitative'' study of positive scalar curvature. More precisely, we show that if a manifold admits a metric $g$ with $s_g \ge | T |$ or $s_g \ge | W |$,…

Differential Geometry · Mathematics 2008-01-02 Harish Seshadri

The theory of classical types of curves in normed planes is not strongly developed. In particular, the knowledge on existing concepts of curvatures of planar curves is widespread and not systematized in the literature. Giving a…

Differential Geometry · Mathematics 2017-02-07 Vitor Balestro , Horst Martini , Emad Shonoda

In this paper, we propose a new assumption (1.2) that involves a small oscillation and $C^2$ norms for maps from smooth bounded domains into Euclidean spaces. Furthermore, by assuming that the domain has non-negative Ricci curvature, we…

Differential Geometry · Mathematics 2025-07-01 Caiyan Li , Hengyu Zhou

We show that a Riemannian $3$-manifold with non-negative scalar curvature is flat if it contains an area-minimizing cylinder. This scalar-curvature analogue of the classical splitting theorem of J.~Cheeger and D.~Gromollhas been conjectured…

Differential Geometry · Mathematics 2019-09-05 Otis Chodosh , Michael Eichmair , Vlad Moraru

This note intends to demonstrate how to discuss scalar curvature functions' admissibility on bundles by directly applying some of the Kazdan--Warner results. Proofs of the concept include determining which functions are realizable as scalar…

Differential Geometry · Mathematics 2023-05-16 Leonardo Francisco Cavenaghi , Llohann Dallagnol Sperança

Let $(M^{n},g_{0})$ be a $n=3,4,5$ dimensional, closed Riemannian manifold of positive Yamabe invariant. For a smooth function $K>0$ on $M$ we consider a scalar curvature flow, that tends to prescribe $K$ as the scalar curvature of a metric…

Differential Geometry · Mathematics 2015-09-03 Martin Mayer

Wintgen ideal submanifolds in space forms are those ones attaining equality pointwise in the so-called DDVV inequality which relates the scalar curvature, the mean curvature and the scalar normal curvature. They are Moebius invariant…

Differential Geometry · Mathematics 2014-04-08 Xiang Ma , Zhenxiao Xie

This paper develops a technique for applying one-parameter prescribed mean curvature min-max theory in certain non-compact manifolds. We give two main applications. First, fix a dimension $3\le n+1 \le 7$ and consider a smooth function…

Differential Geometry · Mathematics 2022-04-18 Liam Mazurowski

We show that a general curve in an explicit class of what we call Du Val pointed curves satisfies the Brill-Noether Theorem for pointed curves. Furthermore, we prove that a generic pencil of Du Val pointed curves is disjoint from all…

Algebraic Geometry · Mathematics 2023-03-10 Gavril Farkas , Nicola Tarasca

Suppose M is a closed submanifold in a Euclidean ball of sufficiently large dimension. We give an optimal bound on the normal curvatures, guaranteeing that M is a sphere. The border cases consist of Veronese embeddings of the four…

Differential Geometry · Mathematics 2025-03-18 Anton Petrunin

We generalize Llarull's scalar curvature comparison to Riemannian manifolds admitting metric connections with parallel and alternating torsion and having a nonnegative curvature operator on 2-vectors. As a byproduct, we show that Euler…

Differential Geometry · Mathematics 2010-11-23 Sebastian Goette

We prove mean curvature estimates and a Jorge-Koutroufiotis type theorem for submanifolds confined into either a horocylinder of N X L or a horoball of N, where N is a Cartan-Hadamard manifold with pinched curvature. Thus, these…

Differential Geometry · Mathematics 2015-06-11 G. Pacelli Bessa , Jorge H. de Lira , Stefano Pigola , Alberto G. Setti

In this paper we prove two sharp inequalities involving the normalized scalar curvature and the generalized normalized $\delta$-Casorati curvatures for slant submanifolds in quaternionic space forms. We also characterize those submanifolds…

Differential Geometry · Mathematics 2015-06-10 Jaewon Lee , Gabriel-Eduard Vîlcu

The Weyl principle is extended from the Riemannian to the pseudo-Riemannian setting, and subsequently to manifolds equipped with generic symmetric $(0,2)$-tensors. More precisely, we construct a family of generalized curvature measures…

Differential Geometry · Mathematics 2022-09-14 Andreas Bernig , Dmitry Faifman , Gil Solanes

In this paper, we prove a conjecture of Schnell in the surface case.

Algebraic Geometry · Mathematics 2024-02-27 Jun Lu , Wan-Yuan Xu

We obtain new topological information about the local structure of collapsing under a lower sectional curvature bound. As an application we prove a new sphere theorem and obtain a partial result towards the conjecture that not every…

Differential Geometry · Mathematics 2007-05-23 Vitali Kapovitch

We prove integral curvature bounds in terms of the Betti numbers for compact submanifolds of the Euclidean space with low codimension. As an application, we obtain topological obstructions for $\delta$-pinched immersions. Furthermore, we…

Differential Geometry · Mathematics 2017-01-26 Christos-Raent Onti , Theodoros Vlachos

The Honeycomb Conjecture states that among tilings with unit area cells in the Euclidean plane, the average perimeter of a cell is minimal for a regular hexagonal tiling. This conjecture was proved by L. Fejes T\'oth for convex tilings, and…

Metric Geometry · Mathematics 2025-12-15 Zsolt Lángi , Shanshan Wang

The main point of this paper is that, under suitable conditions on the mean curvature and the Ricci curvature of the ambient space, we can extend Choi-Schoen's Compactness Theorem to compact embedded minimal surfaces to simple immersed…

Differential Geometry · Mathematics 2011-08-30 Jose M. Espinar