Results 11 to 20 of about 23,033 (265)

Some Regularity Properties on Bolza problems in the Calculus of Variations

open access: yesComptes Rendus. Mathématique, 2022
The paper summarizes the main core of the last results that we obtained in [8, 4, 17] on the regularity of the value function for a Bolza problem of a one-dimensional, vectorial problem of the calculus of variations. We are concerned with a nonautonomous
Bernis, Julien   +2 more
doaj   +1 more source

A Theory of Explicit Substitutions with Safe and Full Composition [PDF]

open access: yesLogical Methods in Computer Science, 2009
Many different systems with explicit substitutions have been proposed to implement a large class of higher-order languages. Motivations and challenges that guided the development of such calculi in functional frameworks are surveyed in the first part of ...
Delia Kesner
doaj   +1 more source

Meningkatkan Pemahaman Mahasiswa tentang Konsep Limit Fungsi Satu Variabel Real melalui Pembelajaran Kooperatif

open access: yesJurnal Ilmu Pendidikan, 2016
Students' comprehension on the functional limit concept of one real variable is still low, whereas the limit concept is the main basis in learning calculus further.
Usman H.B.
doaj   +1 more source

Foundational aspects of a new matrix holomorphic structure [PDF]

open access: yesArab Journal of Mathematical Sciences
Purpose – In this paper we talk about complex matrix quaternions (biquaternions) and we deal with some abstract methods in mathematical complex matrix analysis. Design/methodology/approach – We introduce and investigate the complex space HC consisting of
Hedi Khedhiri, Taher Mkademi
doaj   +1 more source

Formulation of scale transformation in a stochastic data assimilation framework [PDF]

open access: yesNonlinear Processes in Geophysics, 2017
Understanding the errors caused by spatial-scale transformation in Earth observations and simulations requires a rigorous definition of scale. These errors are also an important component of representativeness errors in data assimilation.
F. Liu, F. Liu, X. Li, X. Li, X. Li
doaj   +1 more source

Investigating spatial skills and math anxiety as mediatorsinasequential mediation model: A pilot study

open access: yesJournal of Research and Advances in Mathematics Education, 2021
Prior research showed a gender effect on spatial ability, math anxiety, andmath achievement. Lacking, however, is a comprehensive studythattested the mediation effects of spatial ability and math anxiety betweengender and math achievement in a sequential
Lu Wang
doaj   +1 more source

Frac-Vector: Better Category Representation

open access: yesFractal and Fractional, 2023
For this paper, we proposed the fractional category representation vector (FV) based on fractional calculus (FC), of which one-hot label is only the special case when the derivative order is 0. FV can be considered as a distributional representation when
Sunfu Tan, Yifei Pu
doaj   +1 more source

Classical Copying versus Quantum Entanglement in Natural Language: The Case of VP-ellipsis [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2018
This paper compares classical copying and quantum entanglement in natural language by considering the case of verb phrase (VP) ellipsis. VP ellipsis is a non-linear linguistic phenomenon that requires the reuse of resources, making it the ideal test case
Gijs Wijnholds, Mehrnoosh Sadrzadeh
doaj   +1 more source

Oscillation of Non-Linear Systems Close to Equilibrium Position in the Presence of Coarse-Graining in Time and Space

open access: yesNonlinear Analysis, 2009
One considers the motion of nonlinear systems close to their equilibrium positions in the presence of coarse-graining in time on the one hand, and coarse-graining in time on the other hand.
G. Jumarie
doaj   +1 more source

Fractal and Entropy Analysis of the Dow Jones Index Using Multidimensional Scaling

open access: yesEntropy, 2020
Financial time series have a fractal nature that poses challenges for their dynamical characterization. The Dow Jones Industrial Average (DJIA) is one of the most influential financial indices, and due to its importance, it is adopted as a test bed for ...
José A. Tenreiro Machado
doaj   +1 more source

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