Results 61 to 70 of about 2,762,125 (247)
On W∗-continuous cosine operator functions
Journal of Functional Analysis, 1986 This paper presents some results on the dual theory, the infinitesimal comparison, and the ergodic theory of a strongly continuous cosine operator function \(C(\cdot)\) on a Banach space. The dual theory, which is studied in section 2, is similar to that of a \((C_ 0)\)-semigroup.
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Matrices of operators and regularized cosine functions [PDF]
, 2006 This paper is concerned with matrices of abstract differential operators which are parabolic in the sense of Shilov or correct in the sense of Petrovskij.
Zheng, Quan
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Advanced Functional Materials, EarlyView.Advanced ink systems for solution‐processed textile triboelectric nanogenerators are systematically summarized, spanning conductive, tribo‐negative, and tribo‐positive layers. By connecting ink chemistry, deposition methods, and device function, the present review reveals the key governing principles of solution development and highlights practical ...
Xinlong Sun, Stephen Beeby
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On the Operator-valued $μ$-cosine functions
, 2017 8pages
Belaid, Bouikhalene +1 more
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Advanced Functional Materials, EarlyView.Here, we develop a high‐throughput algorithm that accelerates the elucidation of phase diagrams of topological spin textures using limited computational resources at high numerical accuracy. Applying this framework to the van der Waals magnet CrSBr, we unveiled a hierarchy of previously unknown topological textures (domain‐wall bimerons, bimeron chains,
Andrew Lyall +4 more
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A remark on nonlinear cosine functions
Semigroup Forum, 1986 Well-posed linear initial value problems of the form \(d^ 2u(t)/dt^ 2=Au(t)\), \(u(0)=x\), \((du/dt)(0)=0\) have unique solutions given by \(u(t)=C(t)x\) where the cosine function C satisfies \[ \begin{cases} C(t+s)+C(t- s)= 2C(t)C(s) \quad (t,s\in {\mathbb{R}})\\ C(0)=I.\end{cases} \tag{*} \] Linear cosine function theory is analogous to \((C_ 0 ...
Goldstein, J.A., Ôharu, S.
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Sub‐Nanometer Curvature Unlocks Quantum Orbital Flexoelectricity in Graphene
Advanced Materials, EarlyView.In self‐assembled, reproducible, large‐area, quasi‐pristine graphene nanowrinkles, extreme curvature forces out‐of‐plane π‐electrons toward hybridization, driving a transition from classical to quantum orbital flexoelectricity. As curvature approaches the fundamental physical limit set by the C─C bond length, the resulting polarization increases by ...
Sathvik Ajay Iyengar +8 more
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Advanced Materials, EarlyView.Magnetic tunnel junctions (MTJs) using MgO tunnel barriers face challenges of high resistance‐area product and low tunnel magnetoresistance (TMR). To discover alternative materials, Literature Enhanced Ab initio Discovery (LEAD) is developed. The LEAD‐predicted materials are theoretically evaluated, showing that MTJs with dusting of ScN or TiN on ...
Sabiq Islam +6 more
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Superstability of approximate cosine type functions on the monoid ℝ² [PDF]
, 2012 In this paper, we study the superstability problem for the cosine type functional equation f(x₁x₂, x₁y₂ + x₂y₁) + f(x₁x₂, y₁x₂ ‒ x₁y₂) = 2 f(x₁, y₁) f(x₂, y₂) on the commutative monoid (ℝ²,X).
Bouikhalene, B. +4 more
core
Giant Orbital Rashba–Edelstein Effect in Crystalline Cu2O/Cu Heterostructures
Advanced Materials, EarlyView.An enhanced orbital Rashba–Edelstein effect is demonstrated in a crystalline Cu2O/Cu heterostructure, compared to naturally oxidized CuOx structures, highlighting the critical role of crystallinity and interface control in orbital torque generation. The resulting spin torque conductivity exceeds that of Pt, indicating the potential of orbital torque ...
San Ko +10 more
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