Results 71 to 80 of about 2,530,049 (324)

On surjective quadratic mappings

open access: yesMathematical Notes, 2016
The authors define a quadratic mapping \(Q:\mathbb{R}^n\to \mathbb{R}^k\) to be stably surjective if there is an \(\varepsilon>0\) such that every quadratic mapping \(\widetilde Q: \mathbb{R}^n\to\mathbb{R}^k\) for which \(\rho(Q,\widetilde Q)
Arutyunov A.V., Zhukovskii S.E.
openaire   +3 more sources

JENSEN TYPE QUADRATIC-QUADRATIC MAPPING IN BANACH SPACES [PDF]

open access: yesBulletin of the Korean Mathematical Society, 2006
Let X;Y be vector spaces. It is shown that if an even mapping f : X !
Choon-Kil Park   +2 more
openaire   +1 more source

Characterization of solutions of the discrete-time algebraic Riccati equation based on quadratic difference forms

open access: yes, 2006
This paper is concerned with a characterization of all symmetric solutions to the discrete-time algebraic Riccati equation (DARE). Dissipation theory and quadratic difference forms from the behavioral approach play a central role in this paper. Along the
Osamu Kaneko   +7 more
core   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Temperature dependence of Kerr coefficient and quadratic polarized optical coefficient of a paraelectric Mn:Fe:KTN crystal

open access: yesAIP Advances, 2015
We measure temperature dependence on Kerr coefficient and quadratic polarized optical coefficient of a paraelectric Mn:Fe:KTN crystal simultaneously in this work, based on digital holographic interferometry (DHI).
Qieni Lu   +4 more
doaj   +1 more source

On Poonen's Conjecture Concerning Rational Preperiodic Points of Quadratic Maps [PDF]

open access: yes, 2009
The purpose of this note is give some evidence in support of conjectures of Poonen, and Morton and Silverman, on the periods of rational numbers under the iteration of quadratic polynomials.
Benjamin Hutz, Patrick Ingram
semanticscholar   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

Quadratic rational maps with integer multipliers

open access: yes, 2021
17 pages, 4 figures, 6 tablesIn this article, we prove that every quadratic rational map whose multipliers all lie in the ring of integers of a given imaginary quadratic field is a power map, a Chebyshev map or a Lattès map.
Huguin, Valentin
core   +1 more source

Circles and Quadratic Maps Between Spheres [PDF]

open access: yesGeometriae Dedicata, 2005
14 pages, v3: minor changes to improve ...
openaire   +3 more sources

Home - About - Disclaimer - Privacy