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In the paper, we prove the existence of a positive and essentially bounded solution to a Lichnerowicz equation in the Einstein-scalar field theory on a closed manifold with non-constant mean curvature. In particular, the non-constant mean…

Analysis of PDEs · Mathematics 2025-11-20 Bartosz Bieganowski , Pietro d'Avenia , Jacopo Schino , Daniel Strzelecki

We propose a new extension of the proof of the Korevaar-Meyers conjecture by Bondarenko, Radchenko and Viazovska for cubature formulas with prefixed weights (we fix different weights for different points) on algebraic and Riemannian…

Numerical Analysis · Mathematics 2020-03-27 Martin Ehler , Ujué Etayo , Bianca Gariboldi , Giacomo Gigante , Thomas Peter

We undertake a systematic investigation of compact aspherical manifolds with boundary; motivated by the plethora of examples in the bounded case and by the beauty of the theory in the closed case. Our main theorems give a homological…

Geometric Topology · Mathematics 2025-01-23 James F. Davis , J. A. Hillman

A conjecture of Kotschick predicts that a compact K\"ahler manifold $X$ fibres smoothly over the circle if and only if it admits a holomorphic one-form without zeros. In this paper we develop an approach to this conjecture and verify it in…

Algebraic Geometry · Mathematics 2019-11-11 Stefan Schreieder

Given a germ of holomorphic map $f$ from $\mathbb C^n$ to $\mathbb C^{n+1}$, we define a module $M(f)$ whose dimension over $\mathbb C$ is an upper bound for the $\mathscr A$-codimension of $f$, with equality if $f$ is weighted homogeneous.…

Algebraic Geometry · Mathematics 2016-04-11 J. Fernández de Bobadilla , J. J. Nuño-Ballesteros , G. Peñafort-Sanchis

We prove the following results: An almost Hermitian manifold of indefinite metric is of pointwise constant holomorphic sectional curvature if the holomorphic sectional curvature is bounded from above and from below. If the antiholomorphic…

Differential Geometry · Mathematics 2010-08-12 Adrijan Borisov , Ognian Kassabov

We prove an existence result for the Poisson equation on non-compact Riemannian manifolds satisfying weighted Poincar\'e inequalities outside compact sets. Our result applies to a large class of manifolds including, for instance, all…

Analysis of PDEs · Mathematics 2019-05-06 Giovanni Catino , Dario Daniele Monticelli , Fabio Punzo

The Lichnerowicz conjecture asserts that all harmonic manifolds are either flat or locally symmetric spaces of rank~1. This conjecture has been proved by Z. Szab\'{o} \cite{Sz} for harmonic manifolds with compact universal cover. E. Damek…

Differential Geometry · Mathematics 2009-10-21 Gerhard Knieper

In this paper, we established the boundedness of m-linear Marcinkiewicz integral on Campanato type spaces. We showed that if the $m$-linear Marcinkiewicz integral is finite for one point, then it is finite almost everywhere. Moreover, the…

Classical Analysis and ODEs · Mathematics 2015-12-03 Qingying Xue , Kozo Yabuta

Let M be a Riemannian manifold and R its curvature tensor. For a unit vector X tangent to M at a point p, the Jacobi operator is defined by R_X = R(X, .) X$. The manifold M is called pointwise Osserman if, for every point p, the spectrum of…

Differential Geometry · Mathematics 2007-05-23 Y. Nikolayevsky

We prove that for any compact manifold of dimension greater than $1$, the set of pseudo-Riemannian metrics having a trivial isometry group contains an open and dense subset of the space of metrics.

Differential Geometry · Mathematics 2014-03-04 Pierre Mounoud

Refining an argument of the second author, we improve the known bounds for the number of rational points near a submanifold of $\mathbb{R}^d$ of intermediate dimension under a natural curvature condition. Furthermore, in the codimension $2$…

Number Theory · Mathematics 2025-12-30 Jonathan Hickman , Rajula Srivastava , James Wright

We prove that the cardinality of the torsion subgroups in homology of a closed hyperbolic manifold of any dimension can be bounded by a doubly exponential function of its diameter. It would follow from a conjecture by Bergeron and Venkatesh…

Geometric Topology · Mathematics 2017-09-07 Bram Petri

The Bogomolov conjecture claims that a closed subvariety containing a dense subset of small points is a special kind of subvarieties. In the arithmetic setting over number fields, the Bogomolov conjecture for abelian varieties has already…

Algebraic Geometry · Mathematics 2019-02-20 Kazuhiko Yamaki

We prove that the Lusternik-Schnirelmann category $cat(M)$ of a closed symplectic manifold $(M, \omega)$ equals the dimension $dim(M)$ provided that the symplectic cohomology class vanishes on the image of the Hurewicz homomorphism. This…

dg-ga · Mathematics 2008-02-03 Yuli B. Rudyak , John Oprea

We settle a conjecture by Bik and Marigliano stating that the degree of a one-dimensional discrete model with rational maximum likelihood estimator is bounded above by a linear function in the size of its support, therefore showing that…

Statistics Theory · Mathematics 2026-03-04 Carlos Améndola , Viet Duc Nguyen , Janike Oldekop

We prove the Conley conjecture for a closed symplectically aspherical symplectic manifold: a Hamiltonian diffeomorphism of a such a manifold has infinitely many periodic points. More precisely, we show that a Hamiltonian diffeomorphism with…

Symplectic Geometry · Mathematics 2009-06-23 Viktor L. Ginzburg

Small codimensional embedded manifolds defined byequations of small degree are Fano and covered by lines. They are complete intersections exactly when the variety of lines through a general point is so and has the right codimension. This…

Algebraic Geometry · Mathematics 2014-11-25 Paltin Ionescu , Francesco Russo

Given a connected Riemannian manifold $\mathcal{N}$, an \(m\)--dimensional Riemannian manifold $\mathcal{M}$ which is either compact or the Euclidean space, $p\in [1, +\infty)$ and $s\in (0,1]$, we establish, for the problems of…

Functional Analysis · Mathematics 2019-04-09 Antonin Monteil , Jean Van Schaftingen

We provide two new proofs of a theorem of Cooper, Long and Reid which asserts that, apart from an explicit finite list of exceptional manifolds, any compact orientable irreducible 3-manifold with non-empty boundary has large fundamental…

Geometric Topology · Mathematics 2007-05-23 Marc Lackenby