Results 91 to 100 of about 8,796 (232)

Noninvasive Intelligent Brain‐Metasurface System for Real‐Time Electromagnetic Wave Manipulation

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
A noninvasive intelligent brain–computer interface (BCI) is integrated with a reconfigurable metasurface to establish a direct neural‐to electromagnetic transduction pathway for real time, multimodal wave control. By combining convolutional‐neural‐network‐based decoding of motor‐imagery electroencephalography (EEG) signals with threshold‐based ...
Xiao Hai   +3 more
wiley   +1 more source

Curvatures of the translation hypersurface in 4-space [PDF]

open access: yes, 2020
We study curvatures C_i (i=1,2,3) of translation hypersurface in the four dimensional Euclidean space.
Güler, Erhan, Kişi, Ömer
core  

Construction of the field of Norden — Timofeev planes of hypersurfacese quipped with distributions

open access: yesДифференциальная геометрия многообразий фигур, 2018
In the projective space the research of a hypersurface with three stron­gest mutual subbundles continues. The field of the invariant Norden — Ti­mofeev planes is constructed that is internally attached to the hypersurface.
N. Eliseeva
doaj  

Curvatures of hypersurfaces

open access: yesLietuvos Matematikos Rinkinys, 2010
In this article we generalize some classical formulas for curvatures of hypersurfaces in the n-dimensional Euclidean space using the homogeneous formulas.
Kazimieras Navickis
doaj   +1 more source

Approximate Ricci‐Flat Metrics for Calabi–Yau Manifolds

open access: yesFortschritte der Physik, Volume 74, Issue 7, July 2026.
ABSTRACT We outline a method to determine analytic Kähler potentials with associated approximately Ricci‐flat Kähler metrics on Calabi–Yau manifolds. Key ingredients are numerically calculating Ricci‐flat Kähler potentials via machine learning techniques and fitting the numerical results to Donaldson's ansatz.
Seung‐Joo Lee, Andre Lukas
wiley   +1 more source

Ulisse dini-type helicoidal hypersurface 4-space [PDF]

open access: yes, 2018
We considerUlisse Dini-type helicoidal hypersurface in Euclidean 4-space E4.We give some basic notions of the fourdimensional Euclidean geometry in section 2.In section 3, we consider Ulisse Dini helicoidal hypersurface.We obtain Ulisse Dini-type ...
Güler, Erhan   +1 more
core  

Hypersurface singularities in positive characteristic [PDF]

open access: yes, 2007
We present results on multiplicity theory. Differential operators on smooth schemes play a central role in the study of the multiplicity of an embedded hypersurface at a point.
Villamayor U., Orlando
core   +1 more source

Some submersions of CR-hypersurfaces of Kaehler-Einstein manifold

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
The Riemannian submersions of a CR-hypersurface M of a Kaehler-Einstein manifold M˜ are studied. If M is an extrinsic CR-hypersurface of M˜, then it is shown that the base space of the submersion is also a Kaehler-Einstein manifold.
Vittorio Mangione
doaj   +1 more source

Polymer brush hypersurface photolithography

open access: yesNature Communications, 2020
Various lithographic approaches are being explored to create polymer brush patterns with micrometer-scale feature dimensions. Here the authors demonstrate a printing approach which allows independent control of the monomer composition and feature height ...
Carlos Carbonell   +7 more
doaj   +1 more source

Coulomb and Higgs branches from canonical singularities. Part I. Hypersurfaces with smooth Calabi-Yau resolutions

open access: yesJournal of High Energy Physics, 2022
Compactification of M-theory and of IIB string theory on threefold canonical singularities gives rise to superconformal field theories (SCFTs) in 5d and 4d, respectively.
Cyril Closset   +2 more
doaj   +1 more source

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