Results 21 to 30 of about 64 (62)
Moment Problems on Bounded and Unbounded Domains
International Journal of Analysis, Volume 2013, Issue 1, 2013., 2013 Using approximation results, we characterize the existence of the solution for a two‐dimensional moment problem in the first quadrant, in terms of quadratic forms, similar to the one‐dimensional case. For the bounded domain case, one considers a space of complex analytic functions in a disk and a space of continuous functions on a compact interval. The
Octav Olteanu, Zhijun Qiao
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Sequences suffice for pointfree uniform completions
Journal of the London Mathematical Society, Volume 112, Issue 2, August 2025.Abstract Completions of metric spaces are usually constructed using Cauchy sequences. However, this does not work for general uniform spaces, where Cauchy filters or nets must be used instead. The situation in pointfree topology is more straightforward: the correct completion of uniform locales can indeed be obtained as a quotient of a locale of Cauchy
Graham Manuell
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The Elman‐Lam‐Krüskemper Theorem
International Scholarly Research Notices, Volume 2011, Issue 1, 2011., 2011 For a (formally) real field K, the vanishing of a certain power of the fundamental ideal in the Witt ring of K(-1) implies that the same power of the fundamental ideal in the Witt ring of K is torsion free. The proof of this statement involves a fact on the structure of the torsion part of powers of the fundamental ideal in the Witt ring of K.
Karim Johannes Becher +3 more
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On the parameterized Tate construction
Journal of Topology, Volume 18, Issue 1, March 2025.Abstract We introduce and study a genuine equivariant refinement of the Tate construction associated to an extension Ĝ$\widehat{G}$ of a finite group G$G$ by a compact Lie group K$K$, which we call the parameterized Tate construction (−)tGK$(-)^{t_G K}$.
J. D. Quigley, Jay Shah
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The compactificability classes of certain spaces
International Journal of Mathematics and Mathematical Sciences, Volume 2006, Issue 1, 2006., 2006 We apply the theory of the mutual compactificability to some spaces, mostly derived from the real line. For example, any noncompact locally connected metrizable generalized continuum, the Tichonov cube without its zero point Iℵ0\{0}, as well as the Cantor discontinuum without its zero point Dℵ0\{0} are of the same class of mutual compactificability as ...
Martin Maria Kovár
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Existence of an order-preserving function on normally preordered spaces
, 1986 The object of this paper is to generalize the classic theorems of Eilenberg and Debreu on the existence of continuous order-preserving transformations on ordered topological spaces and to prove them in a different way.
Mehta G.
core +1 more source
The Interaction of Femtosecond Laser with Perovskites for Advanced Photonics
Advanced Photonics Research, Volume 5, Issue 11, November 2024.Femtosecond laser processing of halide perovskites can realize high‐solution, arbitrary planar, and 3D micro/nano‐architecture at large‐scale with low‐cost. This review systematically summarizes the interaction of fs laser with perovskites, including the mechanisms, phenomena, and applications.
Beibei Xu +6 more
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On the existence of certainty equivalents of various relevant types
Journal of Applied Mathematics, Volume 2003, Issue 9, Page 447-458, 2003., 2003 We tackle the problem of associating certainty equivalents with preferences over stochastic situations, which arises in a number of different fields (e.g., the theory of risk attitudes or the analysis of stochastic cooperative games). We study the possibility of endowing such preferences with certainty equivalence functionals that satisfy relevant ...
J. C. R. Alcantud, G. Bosi
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Macromolecular Chemistry and Physics, Volume 225, Issue 2, January 2024.Isotactic polypropylene is one of the most frequently used polymers in industrial processing and scientific research. The review is focused on semicrystalline character of isotactic polypropylene under deformation and various processes and deformation stages due to crystalline morphology changes.
Mohammed A. Sharaf, Andrzej Kloczkowski
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Fuzzy neighborhood structures on partially ordered groups
International Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 6, Page 359-365, 2002., 2002 Ahsanullah (1988) showed the compatibility between group structures and I‐fuzzy neighborhood systems. In this paper, we require not only that the I‐fuzzy neighborhood systems be compatible with the group structures, but also compatible with the order relation, in one sense or another.
Kamel El-Saady, M. Y. Bakier
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