Results 61 to 70 of about 1,604 (193)
Weak normalization and seminormalization in real algebraic geometry
, 2017 This version contains some inaccuracies about centrality issues. A new version will appear soon.We define the weak normalization and the seminormalization of a central real algebraic variety.
Monnier, Jean-Philippe +2 more
core
Hyperbolic Rotations With Hybrid Numbers
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT This paper presents a geometric and algebraic analysis of hyperbolic hybrid numbers, which combine structural features of the complex, dual, and hyperbolic number systems. Based on the algebraic properties of the hybrid number set, hyperbolic rotations in both the plane and space are investigated.
İskender Öztürk +2 more
wiley +1 more source
Direct Proof of Termination of the Kohn Algorithm in the Real-Analytic Case [PDF]
, 2014 In 1979 J.J. Kohn gave an indirect argument via the Diederich-Forn\ae ss Theorem showing that finite D'Angelo type implies termination of the Kohn algorithm for a pseudoconvex domain with real-analytic boundary.
Nicoara, Andreea C.
core +1 more source
Hartogs-type theorems in real algebraic geometry, II [PDF]
Let $f:X\rightarrow \mathbb{R}$ be a function defined on a connected nonsingular real algebraic set $X$ in $\mathbb{R}^{2}$ with $dimX \geq 2$ . We prove that f is a regular function whenever the restriction $f\mid_{c}$ is a regular function for every ...
Bilski, Marcin +2 more
core +1 more source
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT We develop and analyze a fully discrete finite difference approximation for a damped shear beam model with mixed boundary conditions and no rotational inertia. The absence of a second‐order time derivative in the rotational equation gives rise to an asymmetric temporal structure.
Anderson de Jesus Araújo Ramos +3 more
wiley +1 more source
Linear Mechatronic Modeling of Rectangular Tank Sloshing Dynamics
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Sloshing dynamics in partially filled tanks can strongly influence system‐level behavior when fluid motion couples with rigid‐body dynamics. This paper presents a linear and acausal two‐dimensional sloshing model for rectangular tanks, based on the reformulation of established sloshing theory within a modular, multi‐domain modeling framework ...
Magnus Steinstø, Eilif Pedersen
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori +1 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Accurate modeling of vibrating machines equipped with Neidhart springs is challenging due to the strong nonlinearities introduced by the elastomer–metal torsional elements and the constraints imposed by their kinematic arrangement. Multibody modeling methodologies for such vibrating machines are often computationally demanding, thus limiting ...
Davide Galli +3 more
wiley +1 more source
Topological Complexity of Configuration Spaces [PDF]
, 2010 In this thesis we study the homotopy invariant TC(X); the topological complexity of a space X. This invariant, introduced by Farber in [15], was originally motivated by a problem in Robotics; the motion planning problem.
COSTA, ARMINDO,EMANUEL +1 more
core
Neuroprotection, EarlyView.Based on GBD 2021, the study analyzed the temporal trends of ischemic stroke (IS) burden in China from 1990 to 2021 and forecasted incidence and mortality through 2050. The absolute burden of IS in China will continue to rise by 2050, driven mainly by population aging, with faster age‐standardized incidence rate growth in females than males.
Yijun Zhang +5 more
wiley +1 more source