Results 101 to 110 of about 9,562 (223)

Research about the number of D-points of -tiling in given ellipse

open access: yesJournal of Hebei University of Science and Technology, 2017
An Archimedean tiling is a tiling of the plane by one type of regular polygon or several types of regular polygons, and every vertex of the tiling has the same vertex characteristics.
Xianglin WEI, Weiqi WANG
doaj   +1 more source

Global Newton Iteration over Archimedean and non-Archimedean Fields

open access: yesCoRR, 2014
In this paper, we study iterative methods on the coefficients of the rational univariate representation (RUR) of a given algebraic set, called global Newton iteration. We compare two natural approaches to define locally quadratically convergent iterations: the first one involves Newton iteration applied to the approximate roots individually and then ...
Jonathan D. Hauenstein   +2 more
openaire   +2 more sources

Densities of nested Archimedean copulas

open access: yes, 2013
Nested Archimedean copulas recently gained interest since they generalize the well-known class of Archimedean copulas to allow for partial asymmetry. Sampling algorithms and strategies have been well investigated for nested Archimedean copulas.
Marius Hofert   +3 more
core   +1 more source

Some New Bivariate Properties and Characterizations Under Archimedean Copula

open access: yesMathematics
This paper considers comparing properties and characterizations of the bivariate functions under Archimedean copula. It is shown that some results of the usual stochastic order for the bivariate functions in the independent case are generalized to the ...
Qingyuan Guan, Peihua Jiang, Guangyu Liu
doaj   +1 more source

The turing closure of an archimedean field

open access: yesTheoretical Computer Science, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
P. Boldi, S. Vigna
openaire   +2 more sources

Convergence of Archimedean Copulas

open access: yes, 2008
The paper on Convergence of Archimedean Copulas, with Johan Segers, just appeared, in Statistics and Probability Letters. Convergence of a sequence of bivariate Archimedean copulas to another Archimedean copula or to the comonotone copula is shown to be ...
Arthur Charpentier
core   +1 more source

On metrizable non-Archimedean LF-spaces

open access: yes, 2009
It is known that no non-Archimedean LB-space (and no strict non-Archimedean LF-space) is metrizable. We show that there exist many metrizable (or even normable) non-Archimedean LF-spaces.
Śliwa, Wiesław, Wiesław Śliwa
core   +1 more source

VALUE AT RISK ESTIMATION FOR STOCK PORTFOLIO USING THE ARCHIMEDEAN COPULA APPROACH

open access: yesBarekeng
Investment is one of the many ways to achieve future profits. One form of investment that is widely made is stocks. The return obtained in investing in stocks is potentially higher than other investment alternatives, but the risks borne are amplified, so
Mohammad Dicky Saifullah   +3 more
doaj   +1 more source

Lower Tail Dependence for Archimedean Copulas: Characterizations and Pitfalls

open access: yes
Tail dependence copulas provide a natural perspective from which one can study the dependence in the tail of a multivariate distribution.For Archimedean copulas with continuously differentiable generators, regular variation of the generator near the ...
Charpentier, A., Segers, J.J.J.
core  

Archimedean Closed Lattice-Ordered Groups [PDF]

open access: yes, 2004
We show that, if an abelian lattice-ordered group is archimedean closed, then each principal l-ideal is also archimedean closed. This has given a positive answer to the question raised in 1965 and hence proved that the class of abelian archimedean closed
Conrad, Paul   +2 more
core  

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