Results 31 to 40 of about 7,130 (129)

On Schur Convexity of Some Symmetric Functions

, 2010
For and , the symmetric function is defined as , where are positive integers. In this paper, the Schur convexity, Schur multiplicative convexity, and Schur harmonic convexity of are discussed.
Xia Wei-Feng, Chu Yu-Ming
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Multiplicative models of financial returns an what we fail to get when they are disregarded [PDF]

This paper puts forward an alternative approach to multiplicative models and their assessment of returns out of financial assets. Firstly, it lays down an operative definition but also sets forth a commutative framework of mappings to provide foundations
Rodolfo Apreda
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Linear multiplicative functionals of algebras of S-analytic functions on groups

, 2020
Let S be a subsemigroup of a semigroup Σ that generates a group G. We find conditions that assure extendability of linear multiplicative functionals of the algebra AS of S-analytic functions on G with spectra in S to linear multiplicative functionals of ...
Grigoryan S., Tonev T.
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Fuglede`s conjecture fails in dimension 4

, 2005
In this note we modify a recent example of Tao and give an example of a set Omega subset of R-4 such that L-2(Omega) admits an orthonormal basis of exponentials {1/vertical bar Omega vertical bar 1/2 e(2 pi i )}(xi epsilon Lambda) for some set Lambda ...
Matolcsi, Máté
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Testing Multiplicative Error Models Using Conditional Moment Tests [PDF]

We suggest a robust form of conditional moment test as a constructive test for func- tional misspecification in multiplicative error models. The proposed test has power solely against violations of the conditional mean restriction but is not affected by ...
Nikolaus Hautsch
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Fitting multiplicative models by robust alternating regressions. [PDF]

In this paper a robust approach for fitting multiplicative models is presented. Focus is on the factor analysis model, where we will estimate factor loadings and scores by a robust alternating regression algorithm. The approach is highly robust, and also
Croux, Christophe, Filzmoser, P, Pison, G, Rousseeuw, Peter   +3 more
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Distinguishing schemes and tasks in children's development of multiplicative reasoning [PDF]

, 2013
We present a synthesis of findings from constructivist teaching experiments regarding six schemes children construct for reasoning multiplicatively and tasks to promote them.
McClintock, Evan, Xin, Yan P., Si, Luo, Xin, Yan Ping, Johnson, Heather Lynn, Johnson, Heather L., Howard Kenney, Rachael, Hord, Casey, Tzur, Ron, Woordward, Jerry, Kenney, Rachael H., Jin, Xianyan   +11 more
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MULTIPLICATIVE STOCHASTIC RESONANCE

, 1994
A multiplicative bistable stochastic system perturbed by a periodic forcing term is shown to exhibit stochastic resonance with increasing intensity of the multiplicative noise.
L. GAMMAITONI, E. MENICHELLASAETTA, GAMMAITONI, Luca, S. SANTUCCI, MARCHESONI, Fabio, SANTUCCI, Sergio   +5 more
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Some Nonlinear Exponential Smoothing Models are Unstable [PDF]

This paper discusses the instability of eleven nonlinear state space models that underly exponential smoothing. Hyndman et al. (2002) proposed a framework of 24 state space models for exponential smoothing, including the well-known simple exponential ...
Rob J Hyndman, Muhammad Akram
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Influence of aggregation and measurement scale on ranking a compromise alternative in AHP

, 2011
Author's pre-print version dated 20. December 2009 deposited in Munich Personal RePEc Archive. Final version published by Palgrave Macmillan; available online at http:// www.palgrave-journals.com/Analytic Hierarchy Process (AHP) is one of the most ...
Kaplan, T., Balkenborg, Dieter, Kaplan, Todd R., Balkenborg, D., Ishizaka, Alessio   +4 more
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