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Gender Differences in Growth in Mathematical Skills During Secondary Grades: A Growth Model Analysis
Mathematical Skills Growth
2015/9/28
The purpose of this study was to examine differences in the rate at which males and females acquired mathematical skills during secondary grades and to determine the relationship between their rates o...
Lowrank finite-differences and lowrank Fourier finite-differences for seismic wave extrapolation in the acoustic approximation
Numerical solutions Body waves Seismic anisotropy Computational seismology Wave propagation Acoustic properties
2015/7/14
We introduce a novel finite-difference (FD) approach for seismic wave extrapolation in time.We derive the coefficients of the finite-difference operator from a lowrank approximation of the space-waven...
Divided Differences of Multivariate Implicit Functions
Divided Differences Multivariate Implicit Functions Numerical Analysis Combinatorics
2012/3/1
Under general conditions, the equation $g(x^1, ..., x^q, y) = 0$ implicitly defines $y$ locally as a function of $x^1, ..., x^q$. In this article, we express divided differences of $y$ in terms of div...
Spectral estimates for resolvent differences of self-adjoint elliptic operators
Spectral estimates resolvent differences
2011/2/24
The notion of quasi boundary triples and their Weyl functions is an abstract concept to treat spectral and boundary value problems for elliptic partial differential equations.
The differences between natural and artificial life. Towards a definition of life
differences natural artificial life definition of life
2010/12/28
It is high time to openly and without finalism define the dangerous but needed term‘purposeful information’, whose quantity is an Eigen information value. Using the term ‘biological information’ in it...
Simplicial Differerential Calculus, Divided Differences, and Construction of Weil Functors
divided differences differential calculus jet functor scalar extension
2010/12/6
We define a simplicial differential calculus by generalizing divided differences from the case of curves to the case of general maps, defined on general topological vector spaces, or even on modules o...
Certain Bounds for the Differences of Means
Ky Fan's inequality Levinson's inequality Generalized weighted power means Mean value theorem
2008/7/1
Certain Bounds for the Differences of Means.
A Lower Bound for the Differences of Powers of Linear Operators
Esterle--Berkani's conjecture Quasi-nilpotent linear operator Differences of powers Decay
2007/12/11
Let $T$ be a bounded linear operator in a Banach space, with $\sigma(T) = \{1\}$. In 1983, Esterle--Berkani' s conjecture was proposed for the decay of differences $\left ( I - T \right ) T\sp{n}$ as ...
Holistic finite differences accurately model the dynamics of the Kuramoto-Sivashinsky equation
Holistic finite differences accurately model dynamics the Kuramoto-Sivashinsky equation
2010/10/29
We analyse the nonlinear Kuramoto-Sivashinsky equation to develop an accurate finite difference approximation to its dynamics. The analysis is based upon centre manifold theory so we are assured that...