Results 111 to 120 of about 39,096 (194)

Strict topoligies in non-Archimedean function spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
Let F be a non-trivial complete non-Archimedean valued field. Some locally F-convex topologies, on the space Cb(X,E) of all bounded continuous functions from a zero-dimensional topological space X to a non-Archimedean locally F-convex space E, are ...
A. K. Katsaras
doaj   +1 more source

On bivariate Archimedean copulas with fractal support

open access: yesDependence Modeling
Due to their simple analytic form (bivariate) Archimedean copulas are usually viewed as very smooth and handy objects, which should distribute mass in a fairly regular and certainly not in a pathological way. Building upon recently established results on
Sánchez Juan Fernández   +1 more
doaj   +1 more source

A multivariate version of Williamson’s theorem, ℓ1-symmetric survival functions, and generalized Archimedean copulas

open access: yesDependence Modeling, 2018
Williamson’s integral representation of n-monotone functions on the half-line is generalized to several dimensions. This leads to a characterization of multivariate survival functions with multiply ℓ1- symmetry.
Ressel Paul
doaj   +1 more source

Archimedeanity

open access: yes, 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 ...
openaire   +1 more source

A remark on stationary fuzzy metric spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2011
The main result states that the category of stationary fuzzymetric spaces (with respect to an archimedean $t$-norm) andnonexpanding maps is isomorphic to a full subcategory of thecategory of metric spaces and nonexpanding maps.
A. Savchenko
doaj  

Archimedean operator-theoretic Positivstellensätze

open access: yesJournal of Functional Analysis, 2011
We prove a general archimedean positivstellensatz for hermitian operator-valued polynomials and show that it implies the multivariate Fejer-Riesz Theorem of Dritschel-Rovnyak and positivstellens tze of Ambrozie-Vasilescu and Scherer-Hol. We also obtain several generalizations of these and related results.
openaire   +3 more sources

An estimation for the generalized ternary ring homomorphism on non-Archimedean ternary Banach algebras

open access: yesMiskolc 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
doaj   +1 more source

On the lattice of deductive systems of a BL-algebra

open access: yesOpen Mathematics, 2003
Bu§neag Dumitru, Piciu Dana
doaj   +1 more source

Generalized Archimedean fields.

open access: yesNotre Dame Journal of Formal Logic, 1983
Cowles, John, LaGrange, Robert
openaire   +3 more sources

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