Results 41 to 50 of about 1,693,905 (179)
On the Scalar Curvature of Complex Surfaces
, 1994 Let (M,J) be a minimal compact complex surface of Kaehler type. It is shown that the smooth 4-manifold M admits a Riemannian metric of positive scalar curvature iff (M,J) admits a KAEHLER metric of positive scalar curvature. This extends previous results
A. Lichnerowicz +10 more
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MachinesThis paper presents a control method for achieving precise robotic contact on complex and curved surfaces in manufacturing and automation. The method combines smooth trajectory planning with contact force control to improve finishing accuracy while ...
Hosham Wahballa +4 more
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Automatic Robot Trajectory for Thermal-Sprayed Complex Surfaces
Advances in Materials Science and Engineering, 2018 Automatic trajectory generation for thermal spray application is highly desirable for today’s automotive manufacturing. Automatic robot trajectory for free-form surfaces to satisfy the coating uniform is still highly challenging due to the complex ...
Dandan Fang +6 more
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Almost Complex Surfaces in the Nearly Kähler SL(2,ℝ) × SL(2,ℝ)
Mathematics, 2020 The space S L ( 2 , R ) × S L ( 2 , R ) admits a natural homogeneous pseudo-Riemannian nearly Kähler structure. We investigate almost complex surfaces in this space.
Elsa Ghandour, Luc Vrancken
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Complex tangents of real surfaces in complex surfaces
Duke Mathematical Journal, 1992 Let \(M\) be a closed real surface, and let \({\mathcal M}\) be a complex manifold of complex dimension two. Let \(\pi:M\to{\mathcal M}\) be an immersion or embedding of \(M\) into \({\mathcal M}\). A point \(p\in M\) is a complex tangent if \(\pi_ *(T_ pM)\) is a complex 1-dimensional subspace of \(T_{\pi(p)}{\mathcal M}\).
openaire +2 more sources
Holomorphic flexibility properties of compact complex surfaces
, 2013 We introduce the notion of a stratified Oka manifold and prove that such a manifold $X$ is strongly dominable in the sense that for every $x\in X$, there is a holomorphic map $f:\C^n\to X$, $n=\dim X$, such that $f(0)=x$ and $f$ is a local biholomorphism
Barth +29 more
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Tailoring optical complex fields with nano-metallic surfaces
Nanophotonics, 2015 Recently there is an increasing interest in complex optical fields with spatially inhomogeneous state of polarizations and optical singularities.
Rui Guanghao, Zhan Qiwen
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Rate optimization using low complex methods with reconfigurable intelligent surfaces
Journal of Information and Intelligence, 2023 With the help of a developing technology called reconfigurable intelligent surfaces (RISs), it is possible to modify the propagation environment and boost the data rates of wireless communication networks.
Saber Hassouna +4 more
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Fibrations of genus two on complex surfaces
, 2011 We consider fibrations of genus 2 over complex surfaces. The purpose of this paper is primarily to provide a geometric description of the possible structures of the fibration on a neighborhood of a singular fiber.
A. Seidenberg +10 more
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Halogen Bonding in New Dichloride-Cobalt(II) Complex with Iodo Substituted Chalcone Ligands
Crystals, 2020 The synthesis and properties of new chalcone ligand 4I-L ((2E)-1-[4-(1H-imidazol-1-yl)phenyl]-3-(4-iodophenyl)prop-2-en-1-one) and tetracoordinate Co(II) complex [Co(4I-L)2Cl2], (1a), are reported in this article. Upon recrystallization of 1a, the single
Lukáš Masaryk +3 more
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