Results 51 to 60 of about 1,358 (218)

Minimization of hypersurfaces

Mathematics of Computation
Let F ∈ Z [ x 0 , … , x n ] F \in \mathbb {Z}[x_0, \ldots , x_n] be homogeneous of degree  d d and assume that F F is not a ‘nullform’, i.e., there is an invariant 
Elsenhans, Andreas-Stephan, Stoll, Michael   +1 more
openaire   +2 more sources

Causal hierarchy in modified gravity

Journal of High Energy Physics, 2020
We investigate the causal hierarchy in various modified theories of gravity. In general relativity the standard causal hierarchy, (key elements of which are chronology, causality, strong causality, stable causality, and global hyperbolicity), is well ...
Raúl Carballo-Rubio, Francesco Di Filippo, Stefano Liberati, Matt Visser   +3 more
doaj   +1 more source

The Methylbismuth Dication: Pentagonal Pyramidal Coordination and Ligand‐Induced Lewis Superacidity

Angewandte Chemie International Edition, Volume 65, Issue 1, 2 January 2026.
The simplistic methylbismuth dication has been captured only by the aid of monodentate tetrahydrofuran (thf) ligands, [BiMe(thf)5]2+. The hexacoordinate species shows a very unusual pentagonal pyramidal coordination geometry. Unparalleled Lewis acidic and Lewis superacidic properties have been revealed by exploiting the coordination chemical properties
Johannes Schwarzmann, Tamina Z. Kirsch, Benedikt Narz, Crispin Lichtenberg   +3 more
wiley   +1 more source

Area minimizing hypersurfaces with isolated singularities.

Journal für die reine und angewandte Mathematik (Crelles Journal), 1985
The authors consider the following situation: C is a minimal hypercone in \({\mathbb{R}}^{n+1}\), singular only at the origin, which is strictly minimizing in the sense that there is \(\theta >0\) such that \({\mathbb{M}}(C_ 1)\leq {\mathbb{M}}(S)-\theta \epsilon^ n\) whenever \(\epsilon >0\) and S is an integer multiplicity current with spt \(S\subset
Simon, Leon, Hardt, Robert
openaire   +2 more sources

Minimal hypersurfaces in Rn as regular values of a function

Revista Integración, 2004
In this paper we prove that if M = /_1(0) is a minimal hypersurface of Rn, where / : V C Rn -► R is a smooth function defined on a open set V, then / must satisfy the equation |V/|2A/ = |(V|V/|2,V/} for every x € M.
Óscar Mario Perdomo
doaj  

Frankel property and Maximum Principle at Infinity for complete minimal hypersurfaces [PDF]

, 2022
José M. Espinar, Harold Rosenberg
openalex   +1 more source

Dynamically Tunable Coherent Perfect Absorption Based on Bound States in the Continuum in Borophene Metamaterials

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
This article proposes a symmetry‐protected bound states in the continuum mechanism based on borophene metamaterials, achieving dual‐band broadband coherent perfect absorption (CPA) in the near‐infrared spectrum. By dynamically modulating carrier concentration, the operational bandwidth of CPA can be significantly expanded, effectively overcoming the ...
Xue‐Yan Wu, Yan‐Xi Zhang, Qi Lin, Xiang Zhai, Ling‐Ling Wang, Gui‐Dong Liu   +5 more
wiley   +1 more source

Strongly minimal complex lightlike hypersurfaces

Hacettepe Journal of Mathematics and Statistics, 2022
In this paper, complex lightlike hypersurfaces of an indefinite Kähler manifold are studied. An optimal inequality characterized to strongly minimality for coisotropic lightlike submanifolds is proved. Strongly minimal Monge-type hypersurfaces in $\mathcal{C}_{1}^{4}$ are examined and some examples of these hypersurfaces are given.
Mehmet GÜLBAHAR, Erol KILIÇ
openaire   +2 more sources

Time‐Domain Near‐Field Scanning Microscopy of Terahertz Metasurfaces

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
Time‐domain near‐field scanning terahertz microscopy provides direct access to subwavelength electromagnetic fields on metasurfaces. By combining controlled polarization excitation with nanoscale probing, this technique enables quantitative visualization of localized hotspots, surface‐wave propagation, and wavefront manipulation, offering a powerful ...
Ruxue Wei, Soren Petersen, Weili Zhang
wiley   +1 more source

MINIMAL HYPERSURFACES ASYMPTOTIC TO SIMONS CONES [PDF]

Journal of the Institute of Mathematics of Jussieu, 2015
In this paper, we prove that, up to similarity, there are only two minimal hypersurfaces in $\mathbb{R}^{n+2}$ that are asymptotic to a Simons cone, i.e., the minimal cone over the minimal hypersurface $\sqrt{\frac{p}{n}}\mathbb{S}^{p}\times \sqrt{\frac{n-p}{n}}\mathbb{S}^{n-p}$ of $\mathbb{S}^{n+1}$.
openaire   +4 more sources