Results 121 to 130 of about 4,991,356 (250)
Lining up a positive semi-definite six-point bootstrap
Journal of High Energy PhysicsIn this work, we initiate a positive semi-definite numerical bootstrap program for multi-point correlators. Considering six-point functions of operators on a line, we reformulate the crossing symmetry equation for a pair of comb-channel expansions as a ...
António Antunes +3 more
doaj +1 more source
Numerical behavior for quasi static thermoelasticity without positive definite elasticity
Archives of MechanicsThis paper presents a numerical study of the energetic behavior of some quasi-static thermoelastic problems in one- and two-dimensional settings. Firstly, we describe the two-dimensional thermoelastic problem decomposing the elastic tensor into two parts:
J. Baldonedo +2 more
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Strictly Hermitian positive definite functions
, 2004 . Let H be any complex inner product space with inner product < ·, ·>. We say that f: |C → |C is Hermitian positive definite on H if the matrix f(< z r, z s>) n r,s=1 is Hermitian positive definite for all choice of z 1,..., z n in H ...
Allan Pinkus
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Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai +3 more
wiley +1 more source
Advanced Intelligent Systems, EarlyView.A hybrid mobile robot with a modular Variable‐Stiffness Bridge transitions between a rigid locomotion platform and a flexible, shape‐conforming body. By enclosing objects within its deformable structure rather than relying on dedicated end effectors, the robot achieves orientation‐regulated planar transport, with conformal contact quality shown to ...
Luiza Labazanova +5 more
wiley +1 more source
Advanced Intelligent Systems, EarlyView.The method presented in this paper provides a practical sensorless solution for estimating both contact force and contact location using only standard joint encoders and an available robot dynamic model. By reformulating the contact estimation problem using a single scalar equivalent contact parameter, the approach enables fast and robust computation ...
Thanh‐Quan Ta, Shyh‐Leh Chen
wiley +1 more source
Symmetrically Positive Definite Functions
, 1974 In this thesis we study the representation theorems for evenly positive definite functions on Euclidean spaces. A generalization of the concept of evenness on R^n to a concept of symmetry on any locally compact abelian group is given.
Tang, Lee-Man
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Real and complex variable positive definite functions
, 2012 nuloIn this paper we present an overview of the implications of our previously derived results for positive definite kernels on the general theory of positive definite functions.
Buescu, Jorge, Paixão, A. C.
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Advanced Intelligent Systems, EarlyView.A scalable distributed observer framework for LiDAR sensor networks is presented for robust tracking and pose estimation of mobile robots. By combining adaptable 3D detection, clustering‐based communication reduction, and intermittent inertial fusion, accurate and efficient estimation is achieved under occlusions and sensing constraints, with formally ...
Isabella Luppi, Ehsan Hashemi
wiley +1 more source
Extending positive definite linear forms
, 1984 In the classical literature two properties, called here symmetry and bounded variation, of a positive definite linear form a ′ a’ on an involutive Banach algebra A \mathcal {A} are given ...
Jesús Gil de Lamadrid
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