Results 21 to 30 of about 11,653,744 (332)

A Novel Method for Optimal Control of Piecewise Affine Systems Using Semi-Definite Programming [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2020
: In this paper, a novel optimal control design method by discontinuous quadratic Lyapunov function and continuous quadratic Lyapunov function for 2-dimensional piecewise affine systems via semi-definite programming and LMI constraints is proposed.In ...
Majid Akbarian   +2 more
doaj   +1 more source

El concepto de Rectángulo Equivalente para la caracterización de la forma de una cuenca

open access: yesEcomatemático, 2018
In this work the importance of the teaching of geometry as a modeler of the space in which people are immersed is rescued. For this, is showed the resolution of a problem related to a certain types of disciplines such as cartography, geography, and ...
Alejandra Cañibano , Marcelo Gandini
doaj   +1 more source

Conjugacy problem in groups with quadratic Dehn function [PDF]

open access: yesBulletin of Mathematical Sciences, 2020
We construct a finitely presented group with quadratic Dehn function and undecidable conjugacy problem. This solves Rips’ problem formulated in 1994.
A. Yu. Olshanskii, M. V. Sapir
doaj   +1 more source

Quadratic forms and linear algebraic groups [PDF]

open access: yes, 2009
Topics discussed at the workshop Quadratic Forms and Linear Algebraic Groups included besides the algebraic theory of quadratic and Hermitian forms and their Witt groups several aspects of the theory of linear algebraic groups and homogeneous varieties ...
Harbater, David   +2 more
core   +1 more source

A new variants of quasi-newton equation based on the quadratic function for unconstrained optimization

open access: yes, 2020
The focus for quasi-Newton methods is the quasi-Newton equation. A new quasi-Newton equation is derived for quadratic function. Then, based on this new quasi-Newton equation, a new quasi-Newton updating formulas are presented.
Basim A. Hassan, Mohammed W. Taha
semanticscholar   +1 more source

A Utility Based Approach to Energy Hedging [PDF]

open access: yes, 2011
A key issue in the estimation of energy hedges is the hedgers' attitude towards risk which is encapsulated in the form of the hedgers' utility function.
Alexander   +26 more
core   +3 more sources

OSQP: an operator splitting solver for quadratic programs [PDF]

open access: yesMathematical Programming Computation, 2017
We present a general-purpose solver for convex quadratic programs based on the alternating direction method of multipliers, employing a novel operator splitting technique that requires the solution of a quasi-definite linear system with the same ...
Bartolomeo Stellato   +4 more
semanticscholar   +1 more source

The development of Schoology web-based learning media with GeoGebra to improve the ICT literacy on quadratic functions

open access: yesJournal of Research and Advances in Mathematics Education, 2020
The use of technology in learning is essential for developing students' ICT literacy. However, the application of technology as a learning media remains limited.
Arif Fatahillah   +2 more
doaj   +1 more source

Generalised L\"uroth expansions and a family of Minkowski's Question-Mark functions [PDF]

open access: yes, 2014
The Minkowski's Question-Mark function is a singular homeomorphism of the unit interval that maps the set of quadratic surds into the rationals. This function has deserved the attention of several authors since the beginning of the twentieth century ...
Arroyo, Aubin
core   +3 more sources

Reconocimiento de las variables visuales y unidades simbólicas significativas de las funciones cuadráticas

open access: yesAnnales de Didactique et de Sciences Cognitives, 2017
In this paper, we explore the qualitative recognition by 144 high school students of the visual variables of the graphical representation of a quadratic function and the significant symbolic units of its algebraic writing.
Rebeca Guirette   +2 more
doaj   +1 more source

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