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Relativistic Quantum Mechanical Condition for Expansion of the Universe
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作者 Nishant Kumar Sharma 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第3期1049-1088,共40页
In this manuscript, we will discuss about the quantum mechanical system for the movement of non-intractable particle, non-intractable particle which attends every mass state in the universe, the form of a non-intracta... In this manuscript, we will discuss about the quantum mechanical system for the movement of non-intractable particle, non-intractable particle which attends every mass state in the universe, the form of a non-intractable particle is <i>n</i> = -<i>m</i>, this manuscript defines the stable cross system for the movement of <i>n</i>-<i>i</i> particles and elementary particles with a perfect black body at centre with proofs of picture of super massive black hole, the linear hamiltonian of the cross quantum mechanical system and with this, it’s co-related matrixes, then by the use of cross system of Non-Intractable Particles defining a new right angel theorem. Then the new black body relation free from plank constant depends on non interactive mechanics and <i>m</i>, which has already mentioned in non-interactive mechanics and it’s relation with galaxies. The unique property of cross system is that it is surrounded by the energy of 10e + e always, and at last the relation between zero point energy and dark energy. 展开更多
关键词 riemannian geometry Euclidean geometry Right Angel Theorem Factors for the Expansion of Universe Black Body Radiation Cosmic Form of the Nishant Effect
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Lower Bounds of Optimal Exponentials of Thickness in Geometry Rigidity Inequality for Shells
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作者 YAO Pengfei 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2021年第6期2092-2108,共17页
The optimal exponentials of thickness in the geometry rigidity inequality of shells represent the geometry rigidity of the shells.The author obtains that the lower bounds of the optimal exponentials are 4/3,3/2,and 1,... The optimal exponentials of thickness in the geometry rigidity inequality of shells represent the geometry rigidity of the shells.The author obtains that the lower bounds of the optimal exponentials are 4/3,3/2,and 1,for hyperbolic shells,parabolic shells,and elliptic shells,respectively,through the construction of the Ans?tze. 展开更多
关键词 geometry rigidity inequality SHELL nonlinear elasticity riemannian geometry
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Riemannian geometric approach to optimal binocular rotation,pyramid based interpolation and bio-mimetic pan-tilt movement
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作者 Bijoy KGhosh Bhagya Athukorallage 《Autonomous Intelligent Systems》 2021年第1期13-31,共19页
Over the past several years,we have been studying the problem of optimally rotating a rigid sphere about its center,where the rotation is actuated by a triplet of external torques acting on the body.The control object... Over the past several years,we have been studying the problem of optimally rotating a rigid sphere about its center,where the rotation is actuated by a triplet of external torques acting on the body.The control objective is to repeatedly direct a suitable radial vector,called the gaze vector,towards a stationary point target in R^(3).The orientation of the sphere is constrained to lie in a suitable submanifold of SO(3).Historically,the constrained rotational movements were studied by physiologists in the nineteenth century,interested in eye and head movements.In this paper we revisit the gaze control problem,where two visual sensors,are tasked to simultaneously stare at a point target in the visual space.The target position changes discretely and the problem we consider is how to reorient the gaze directions of the sensors,along the optimal pathway of the human eyes,to the new location of the target.This is done by first solving an optimal control problem on the human binocular system.Next,we use these optimal control and show that a pan-tilt system can be controlled to follow the gaze trajectory of the human eye requiring a nonlinear static feedback of the pan and tilt angles and their derivatives.Our problem formulation uses a new Riemannian geometric description of the orientation space.The paper also introduces a new,pyramid based interpolation method,to implement the optimal controller. 展开更多
关键词 Binocular vision riemannian geometry Optimal control Pyramid based interpolation Bio-Mimetic Pan-Tilt rotation
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On Boundary Stability of Wave Equations with Variable Coefficients
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作者 Yu-xia Guo, Peng-fei YaoDepartment of Mathematics, Tsinghua University, Beijing 100084, China,Institute of System Sciences. Academy of Mathematics and System Sciences, Chinese Academy of Sciences,Beijing 100080, China 《Acta Mathematicae Applicatae Sinica》 SCIE CSCD 2002年第4期589-598,共10页
In this paper, we consider the boundary stabilization of the wave equation with variable coefficients by Riemmannian geometry method subject to a different geometric condition which is motivated by the geometric multi... In this paper, we consider the boundary stabilization of the wave equation with variable coefficients by Riemmannian geometry method subject to a different geometric condition which is motivated by the geometric multiplier identities. Several (multiplier) identities (inequalities) which have been built for constant wave equation by Kormornik and Zuazua are generalized to the variable coefficient case by some computational techniques in Riemmannian geometry, so that the precise estimates on the exponential decay rate are derived from those inequalitities. Also, the exponential decay for the solutions of semilinear wave equation with variable coefficients is obtained under natural growth and sign assumptions on the nonlinearity. Our method is rather general and can be adapted to other evolution systems with variable coefficients (e.g. elasticity plates) as well. 展开更多
关键词 Wave equation exponential decay boundary stabilization the riemannian geometry method
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