Results 71 to 80 of about 4,689,305 (234)

Refinements of the Jensen Inequality and Estimates of the Jensen Gap Based on Interval‐Valued Functions

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The significance of the Jensen inequality stems from its impactful and compelling outcomes. As a generalization of classical convexity, it plays a key role in deriving other well‐known inequalities such as Hermite–Hadamard, Hölder, Minkowski, arithmetic‐geometric, and Young's inequalities.
İzzettin Demir
wiley   +1 more source

Space-Time Defects and Group Momentum Space

open access: yesAdvances in High Energy Physics, 2017
We study massive and massless conical defects in Minkowski and de Sitter spaces in various space-time dimensions. The energy momentum of a defect, considered as an (extended) relativistic object, is completely characterized by the holonomy of the ...
Michele Arzano, Tomasz Trześniewski
doaj   +1 more source

Sensitivity‐Based Distributed Model Predictive Control for Non‐Linear Systems Under Inexact Optimization

open access: yesOptimal Control Applications and Methods, EarlyView.
This article introduces a novel sensitivity‐based algorithm for nonlinear distributed model predictive control. The algorithm requires only local computations with one neighbor‐to‐neighbor communication step per iteration and exhibits a linear order of convergence under suitable conditions.
Maximilian Pierer von Esch   +2 more
wiley   +1 more source

SECOND GAUSSIAN CURVATURE OF B-SCROLL SURFACES IN MINKOWSKI 3-SPACE

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2009
: In this paper, we have studied the second Gaussian curvature KII of B-Scroll surfaces and extension of the B-Scroll surfaces in the Minkowski 3-space (, d31R31R2x + d2y- d2z) .
Erdal ÖZÜSAĞLAM
doaj  

Field theories on ρ-deformed Minkowski space-time

open access: yesJournal of High Energy Physics, 2023
We study one-loop perturbative properties of scalar field theories on the ρ-Minkowski space. The corresponding star-product, together with the involution are characterized from a combination of Weyl quantization and defining properties of the convolution
Kilian Hersent, Jean-Christophe Wallet
doaj   +1 more source

Numerical data generation for building machine learning models for permeability estimation of fibrous structures

open access: yesPolymer Composites, EarlyView.
Data‐driven emulators can estimate the permeability in less than 10% of the time compared to numerical permeability determination. Abstract The challenge of developing effective multiscale flow simulation methods is to take into account all relevant physical effects from fiber to component level, but remain manageable in terms of computational effort ...
Tim Schmidt   +5 more
wiley   +1 more source

Impact of Geometry on Chemical Analysis Exemplified for Photoelectron Spectroscopy of Black Silicon

open access: yesSmall Methods, EarlyView.
This study describes how layer thicknesses of nano‐rough surfaces, here black silicon, can be determined by combining spectroscopic and topographical data. Angular integrated spectroscopic data (XPS) of nano‐rough surfaces are least‐square fitted to angular resolved data from an ultra‐flat surface, here Si wafer, after weighting the latter by the ...
Jens U. Neurohr   +8 more
wiley   +1 more source

Relativistic helicity and link in Minkowski space-time [PDF]

open access: yes, 2013
A relativistic helicity has been formulated in the four-dimensional Minkowski space-time. Whereas the relativistic distortion of space-time violates the conservation of the conventional helicity, the newly defined relativistic helicity conserves in a ...
Z.Yoshida, Y. Kawazura, T. Yokoyama
semanticscholar   +1 more source

Minkowski box from Yangian bootstrap

open access: yesJournal of High Energy Physics, 2021
We extend the recently developed Yangian bootstrap for Feynman integrals to Minkowski space, focusing on the case of the one-loop box integral. The space of Yangian invariants is spanned by the Bloch-Wigner function and its discontinuities.
Luke Corcoran   +3 more
doaj   +1 more source

Confinement, quark mass functions, and spontaneous chiral symmetry breaking in Minkowski space [PDF]

open access: yes, 2013
We formulate the covariant equations for quark-antiquark bound states in Minkowski space in the framework of the Covariant Spectator Theory. The quark propagators are dressed with the same kernel that describes the interaction between different quarks ...
E. P. Biernat   +3 more
semanticscholar   +1 more source

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