Results 31 to 40 of about 362,217 (292)
On the topology of compact Stein surfaces [PDF]
International Mathematics Research Notices, 2001 In this paper we obtain the following results: (1) Any compact Stein surface with boundary embeds naturally into a symplectic Lefschetz fibration over the 2-sphere. (2) There exists a minimal elliptic fibration over the 2-disk, which is not Stein. (3) The circle bundle over a genus n>1 surface with euler number e=-1 admits at least n+1 mutually non ...
Selman Akbulut, Burak Ozbagci
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Surface Qualification Toolpath Optimization for Hybrid Manufacturing
Journal of Manufacturing and Materials Processing, 2021 Hybrid manufacturing machine tools have great potential to revolutionize manufacturing by combining both additive manufacturing (AM) and subtractive manufacturing (SM) processes on the same machine tool.
Austen Thien +2 more
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The change of Fermi surface topology in Bi2Sr2CaCu2O8 with doping [PDF]
, 2005 We report the observation of a change in Fermi surface topology of Bi2Sr2CaCu2O8 with doping. By collecting high statistics ARPES data from moderately and highly overdoped samples and dividing the data by the Fermi function, we answer a long standing ...
A. Kaminski +11 more
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The symplectic topology of Ramanujam's surface
Commentarii Mathematici Helvetici, 2005 Ramanujam's surface M is a contractible affine algebraic surface which is not homeomorphic to the affine plane. For any m>1 the product M^m is diffeomorphic to Euclidean space
Paul Seidel, Ivan Smith
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Topological Derivative for PDEs on Surfaces [PDF]
SIAM Journal on Control and Optimization, 2022 In this paper we study the problem of the optimal distribution of two materials on smooth submanifolds $M$ of dimension $d-1$ in $\mathbf R^d$ without boundary by means of the topological derivative. We consider a class of shape optimisation problems which are constrained by a linear partial differential equation on the surface. We examine the singular
Peter Gangl, Kevin Sturm
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Advanced Science, 2022 Using 3D sonic crystals as acoustic higher‐order topological insulators (HOTIs), 2D surface states described by spin‐1 Dirac equations at the interfaces between the two sonic crystals with distinct topology but the same crystalline symmetry are ...
Fei Meng +8 more
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Circles in the Sky: Finding Topology with the Microwave Background Radiation [PDF]
, 1996 If the universe is finite and smaller than the distance to the surface of last scatter, then the signature of the topology of the universe is writ large on the microwave background sky.
+22 more
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Detailed topology mapping reveals substantial exposure of the "cytoplasmic" C-terminal tail (CTT) sequences in HIV-1 Env proteins at the cell surface. [PDF]
PLoS ONE, 2013 Substantial controversy surrounds the membrane topology of the HIV-1 gp41 C-terminal tail (CTT). While few studies have been designed to directly address the topology of the CTT, results from envelope (Env) protein trafficking studies suggest that the ...
Jonathan D Steckbeck +3 more
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Nihon Kikai Gakkai ronbunshu, 2023 In this paper, a concurrent optimization method of shape and topology for natural vibration design of shell structures is presented. The fundamental vibration eigenvalue is maximized under volume constraints for shape and topology optimization.
Masatoshi SHIMODA, Ryo TSUTSUMI
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Transport Signatures of Fermi Surface Topology Change in BiTeI [PDF]
, 2015 We report a quantum magnetotransport signature of a change in Fermi surface topology in the Rashba semiconductor BiTeI with systematic tuning of the Fermi level $E_F$.
Checkelsky, Joseph G. +3 more
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