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We give a direct, purely arithmetical and elementary proof of the strong normalization of the cut-elimination procedure for full (i.e. in presence of all the usual connectives) classical natural deduction.

Logic · Mathematics 2009-05-07 René David , Karim Nour

We give some classifications of biharmonic hypersurfaces with constant scalar curvature. These include biharmonic Einstein hypersurfaces in space forms, compact biharmonic hypersurfaces with constant scalar curvature in a sphere, and some…

Differential Geometry · Mathematics 2017-08-30 Shun Maeta , Ye-Lin Ou

A proof of Sendov's conjecture is given.

Complex Variables · Mathematics 2007-05-23 Gerald Schmieder

In this paper we prove the Knop conjecture asserting that two smooth affine spherical varieties with the same weight monoids are equivariantly isomorphic. We also state and prove a uniqueness property for not necessarily smooth affine…

Algebraic Geometry · Mathematics 2010-06-03 Ivan V. Losev

In this paper, assuming that a polarized algebraic manifold $(X,L)$ is strongly K-stable, we shall show that the polarization class $c_1(L)$ admits a constant scalar curvature Kaehler metric.

Differential Geometry · Mathematics 2013-07-17 Toshiki Mabuchi

The Slope Conjecture relates the degree of the colored Jones polynomial of a knot to boundary slopes of incompressible surfaces. Our aim is to prove the Slope Conjecture for Montesinos knots, and to match parameters of a state-formula for…

Geometric Topology · Mathematics 2020-05-12 Stavros Garoufalidis , Christine Ruey Shan Lee , Roland van der Veen

In this paper, we prove that the static triple with half harmonic Weyl curvature and positive scalar curvature must be the standard hemisphere.

Differential Geometry · Mathematics 2019-09-23 Li Chen , Xi Guo

We prove the conjectures of Hodge and Tate for any six-dimensional hyper-K\"ahler variety that is deformation equivalent to a generalized Kummer variety.

Algebraic Geometry · Mathematics 2023-08-07 Salvatore Floccari

In this short note we prove the Borel conjecture for a family of aspherical manifolds that includes higher graph manifolds.

Geometric Topology · Mathematics 2019-12-05 Noé Bárcenas , Daniel Juan-Pineda , Pablo Suárez-Serrato

In this paper, we propose a generalization of a congruence due to Carlitz.

Number Theory · Mathematics 2007-05-23 Hao Pan

The first two authors introduced vertex distortion and showed that the vertex distortion of the unknot is trivial. It was conjectured that the vertex distortion of a knot is trivial if and only if the knot is trivial. We will use…

We observe what the canonical bundle formula gives towards a conjecture of Schnell on algebraic fiber spaces, a question concerning the equivalence between the non-vanishing conjecture and the Campana--Peternell conjecture. As a result, we…

Algebraic Geometry · Mathematics 2025-10-09 Hyunsuk Kim

We outline an approach to prove the two dimensional Jacobian Conjecture using the theory of fractals.

Algebraic Geometry · Mathematics 2015-10-20 Ronen Peretz

Prescribed mean curvature problems on the torus has been considered in one dimension. In this paper, we prove the existence of a graph on the $n$-dimensional torus $\mathbb {T}^n$, the mean curvature vector of which equals the normal…

Analysis of PDEs · Mathematics 2020-11-12 Yuki Tsukamoto

A one-line proof of a minimax theorem due to Steinerberger is given.

Combinatorics · Mathematics 2024-05-24 Yi C. Huang

We prove that for $n>3$ each generic simple polytope in $\mathbb{R}^n$ contains a point with at least $2n+4$ emanating normals to the boundary. This result is a piecewise-linear counterpart of a long-standing problem about normals to smooth…

Metric Geometry · Mathematics 2026-01-13 Ivan Nasonov , Gaiane Panina

We prove a conjecture of Meszaros and Morales on the volume of a flow polytope. Independently from our work, Zeilberger sketched a proof of their conjecture. In fact, our proof is the same as Zeilberger's proof. The purpose of this note is…

Combinatorics · Mathematics 2017-04-12 Jang Soo Kim

This is the first in a series of papers where we prove a conjecture of Deser and Schwimmer regarding the algebraic structure of ``global confor- mal invariants"; these are defined to be conformally invariant integrals of geometric scalars.…

Differential Geometry · Mathematics 2009-12-18 Spyros Alexakis

As already noted by Niels Borne and Michel Emsalem, there is a natural generalization of the section conjecture for proper orbicurves. Combined with the reformulation by Niels Borne and Angelo Vistoli of the conjecture in terms of the…

Algebraic Geometry · Mathematics 2019-04-12 Giulio Bresciani

This paper studies Cheeger deformations on $\mathrm{S}^3, \mathrm{SO}(3)$ principal bundles to obtain conditions for positive sectional curvature submersion metrics. We conclude, in particular, a stronger version of the Petersen--Wilhelm…

Differential Geometry · Mathematics 2023-06-21 Leonardo F. Cavenaghi , Lino Grama , Llohann D. Sperança