Results 21 to 30 of about 733 (210)
Campana points of bounded height on vector group compactifications
Proceedings of the London Mathematical Society, Volume 123, Issue 1, Page 57-101, July 2021., 2021 Abstract We initiate a systematic quantitative study of subsets of rational points that are integral with respect to a weighted boundary divisor on Fano orbifolds. We call the points in these sets Campana points. Earlier work of Campana and subsequently Abramovich shows that there are several reasonable competing definitions for Campana points.
Marta Pieropan +3 more
wiley +1 more source
On the decoupled Markov group conjecture
Bulletin of the London Mathematical Society, Volume 53, Issue 1, Page 240-247, February 2021., 2021 Abstract The Markov group conjecture, a long‐standing open problem in the theory of Markov processes with countable state space, asserts that a strongly continuous Markov semigroup T=(Tt)t∈[0,∞) on ℓ1 has bounded generator if the operator T1 is bijective. Attempts to disprove the conjecture have often aimed at glueing together finite‐dimensional matrix
Jochen Glück
wiley +1 more source
Comparison of speeds of convergence in Riesz‐type families of summability methods. II
Mathematical Modelling and Analysis, 2010 Certain summability methods for functions and sequences are compared by their speeds of convergence. The authors are extending their results published in paper [9] for Riesz‐type families {Aα} (α > α0 ) of summability methods Aα .
Anna Šeletski, Anne Tali
doaj +1 more source
Análogos a Teoremas Tauberianos
Revista de Matemática: Teoría y Aplicaciones, 2011 We obtain some results similar to W. Rudin’s Tauberian Theorem, on singular integrals defined on bounded intervals.
María de los Angeles Mora M
doaj +1 more source
Unbounded Versions of Two Old Summability Theorems
Axioms, 2023 In this note, we obtain extensions of a theorem of Meyer-König and Zeller and a theorem of Wilansky in that the given results do not require a summability matrix to be a bounded operator from the convergent sequences into themselves.
Jeff Connor
doaj +1 more source
A Tauberian theorem for (A)(C,?) summability
, 2010 In this paper we prove a Tauberian theorem for (A)(C,?) summability method, which extends the well-known classical Tauberian theorem due to Tauber [A. Tauber, Ein satz der Theorie der unendlichen Reihen, Monatsh. f. Math. 8 (1897) 273277].
Çanak I., Erdem Y.
core +2 more sources
Tauberian conditions for Conull spaces
International Journal of Mathematics and Mathematical Sciences, 1985 The typical Tauberian theorem asserts that a particular summability method cannot map any divergent member of a given set of sequences into a convergent sequence. These sets of sequences are typically defined by an order growth or gap condition.
J. Connor, A. K. Snyder
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DISTRIBUTION OF VALUES OF THE SUM OF UNITARY DIVISORS IN RESIDUE CLASSES
Проблемы анализа, 2016 In this paper we prove the tauberian type theorem containing the asymptotic series for the Dirichlet series. We use this result to study distribution of sum of unitary divisors in residue classes coprime with a module.
B. M. Shirokov, L. A. Gromakovskaya
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Generalized Euler‐Knopp method and convergence acceleration
Mathematical Modelling and Analysis, 2006 New propositions on λ‐boundedness for generalized Euler‐Knopp method of summability (ϵ, T), where ? is a linear bounded operator from Banach space X into X, are proved.
O. Meronen, I. Tammeraid
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International Journal of Mathematics and Mathematical Sciences, 1990 We characterize all infinite matrices of bounded linear operators on a Banach space which preserve the limits of uniformly convergent sequences defined on an infinite set.
I. J. Maddox
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