Results 121 to 130 of about 988,651 (350)
Elliptic Quadratic Operator Equations [PDF]
arXiv, 2017 In the present paper is devoted to the study of elliptic quadratic operator equations over the finite dimensional Euclidean space. We provide necessary and sufficient conditions for the existence of solutions of elliptic quadratic operator equations. The iterative Newton-Kantorovich method is also presented for stable solutions.
arxiv
Advanced Materials, EarlyView.Synthesis of topological semimetal TaAs2 nanowires in situ encapsulated with a thin SiO2 shell unravel a richness of intertwined topological phases manifested by their magnetotransport features: A near‐room‐temperature metal‐to‐insulator transition, strong expressions of topologically nontrivial surface transport, giant magnetoresistance with direction‐
Anand Roy +9 more
wiley +1 more source
On the integration of two types of quadratic differential equations of the first order [PDF]
, 1906 František Graf
openalex +1 more source
Well-posedness of Stochastic Riccati Equations and Closed-Loop Solvability for Stochastic Linear Quadratic Optimal Control Problems [PDF]
arXiv, 2018 We study the closed-loop solvability of a stochastic linear quadratic optimal control problem for systems governed by stochastic evolution equations. This solvability is established by means of solvability of the corresponding Riccati equation, which is implied by the uniform convexity of the quadratic cost functional.
arxiv
Scalable Lithium Niobate Nanoimprinting for Nonlinear Metalenses
Advanced Materials, EarlyView.A broadband polycrystalline lithium niobate platform is developed for highly versatile and scalable fabrication of nonlinear metasurfaces. This work demonstrates simultaneous second harmonic generation and wavefront‐shaping via a metalens on this platform.
Ülle‐Linda Talts +3 more
wiley +1 more source
Mechanical Resonant Sensing of Spin Texture Dynamics in a 2D Antiferromagnet
Advanced Materials, EarlyView.Detection of antiferromagnetic spin texture in a 2D magnetic crystal is achieved through nanomechanical resonators at radio frequencies. Sharp magnetic transitions that lead to abrupt changes in mechanical linear and nonlinear responses are assigned to antiferromagnetic domain motions.
S M Enamul Hoque Yousuf +10 more
wiley +1 more source
On Cyclotomy and Extensions of Gaussian Type Quadratic Relations Involving Numbers of Solutions of Conditional Equations in Finite Fields [PDF]
, 1952 H. S. Vandiver
openalex +1 more source
On the Quadratic Interaction Term in the Real Dirac Field Theory [PDF]
arXiv, 2004 Effects of the quadratic interaction term in the real Dirac field theory are considered.
arxiv
Advanced Materials, EarlyView.Realistic random 3D periodic representative volume element models of multilayer graphene platelet films are constructed to perform simulations, quantify the effects of different geometric parameters on all their five independent elastic properties, and uncover the dominant deformation mechanisms.
Penghao Qi +8 more
wiley +1 more source