Results 121 to 130 of about 9,562 (223)

Enjoy the Joy of Copulas: With a Package copula

Copulas have become a popular tool in multivariate modeling successfully applied in many fields. A good open-source implementation of copulas is much needed for more practitioners to enjoy the joy of copulas.
Jun Yan
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On Quotients of Non-Archimedean Köthe Spaces

, 2007
We show that there exists a non-archimedean Fréchet-Montel spaceWwith a basis and with a continuous norm such that any non-archimedean Fréchet space of countable type is isomorphic to a quotient ofW. We also prove that any non-archimedean nuclear Fréchet
Wiesław Śliwa
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On the lattice of deductive systems of a BL-algebra

Open Mathematics, 2003
Bu§neag Dumitru, Piciu Dana
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An estimation for the generalized ternary ring homomorphism on non-Archimedean ternary Banach algebras

Miskolc Mathematical Notes
In this paper, we introduce the notion of the generalized ternary ring homomorphism on non-Archimedean ternary Banach algebras. Using fixed point methods, we prove the superstability and generalized Hyers-Ulam stability of generalized ternary ring ...
Ismail Nikoufar
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Non-Archimedean John, Non-Archimedean Dvoretzky-Milman, Non-Archimedean Type-Cotype and Non-Archimedean Kwapien Problems

We ask for non-Archimedean version of following four: (1) John Theorem, (2) Dvoretzky-Milman Theorem, (3) Type-Cotype of Banach space, (4) Kwapien Theorem.
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On the representation of non-Archimedean objects

, 2005
Banaschewski [B. Banaschewski, Über nulldimensionale Räume, Math. Nachr. 13 (1955) 129–140], Monna [A.F. Monna, Remarques sur les métriques non-Archimédiennes. I, II, Indag. Math. 53 (1950) 122–133, 179–191], van Rooij [A.C.M.
Deses, Didier
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Archimedeanity

, 2015
Copulae sind in der multivariaten Statistik und Finanzapplikationen von großer Bedeutung. Eine wichtige Copula-Famlie sind die Archimedischen Copulae. Für parametrische Copulafamilien gibt es bereits eine Fülle an Tests zur Anpassungsgüte. Die Hypothese, dass eine Copula eine beliebige Archimedische Copula ist, wurde dagegen bisher in der Literatur ...
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Sampling Archimedean copulas

The challenge of efficiently sampling exchangeable and nested Archimedean copulas is addressed. Specific focus is put on large dimensions, where methods involving generator derivatives are not applicable.
Hofert, Marius
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A Topological Proof of the Archimedean Axiom for Archimedean Copulas

Archimedean copulas are a popular type of copulas in which a variant of the Archimedean axiom apply. We provide a topological proof of the Archimedean Axiom which is applicable for non-continuous distribution functions.
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Archimedean Copulae and Positive Dependence. [PDF]

In the first part of the paper we consider positive dependence properties of Archimedean copulae. Especially we characterize the Archimedean copulae that are multivariate totally positive of order 2 (MTP2) and conditionally increasing in sequence. In the
Marco Scarsini, Alfred Müller
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