Search Results - "Gabriyelyan, Saak"
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Local completeness of Ck(X)
Published in Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas (01-10-2023)“…Answering a long-standing open problem we characterize locally complete spaces C k ( X ) , where C k ( X ) denotes the space of all real-valued continuous…”
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Locally Convex Spaces with Sequential Dunford–Pettis Type Properties
Published in Axioms (01-07-2024)“…Let p,q,q′∈[1,∞], q′≤q. Several new characterizations of locally convex spaces with the sequential Dunford–Pettis property of order (p,q) are given. We…”
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Limited type subsets of locally convex spaces
Published in AIMS mathematics (01-01-2024)“…Let $ 1\leq p\leq q\leq\infty. $ Being motivated by the classical notions of limited, $ p $-limited, and coarse $ p $-limited subsets of a Banach space, we…”
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A locally quasi-convex abelian group without a Mackey group topology
Published in Proceedings of the American Mathematical Society (01-08-2018)“…We give the first example of a locally quasi-convex (even countable reflexive and k_\omega ) abelian group G which does not admit the strongest compatible…”
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Ascoli’s theorem for pseudocompact spaces
Published in Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas (01-10-2020)“…A Tychonoff space X is called ( sequentially ) Ascoli if every compact subset (resp. convergent sequence) of C k ( X ) is equicontinuous, where C k ( X )…”
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Topological properties of strict (LF)-spaces and strong duals of Montel strict (LF)-spaces
Published in Monatshefte für Mathematik (01-05-2019)“…Following Banakh and Gabriyelyan (Monatshefte Math 180:39–64, 2016 ), a Tychonoff space X is Ascoli if every compact subset of C k ( X ) is equicontinuous. By…”
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Topological properties of inductive limits of closed towers of metrizable groups
Published in Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas (2022)“…Let { G n } n ∈ ω be a closed tower of metrizable groups. Under a mild condition called ( GC ) and which is strictly weaker than PTA condition introduced by…”
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Normed Spaces Which Are Not Mackey Groups
Published in Axioms (01-09-2021)“…It is well known that every normed (even quasibarrelled) space is a Mackey space. However, in the more general realm of locally quasi-convex abelian groups an…”
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The Mackey problem for free abelian topological groups
Published in Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas (01-07-2019)“…The classical Mackey–Arens theorem states that every locally convex space has a Mackey space topology. However, in the wider class of locally quasi-convex…”
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Bounded sets structure of CpX and quasi‐(DF)‐spaces
Published in Mathematische Nachrichten (01-12-2019)“…For wide classes of locally convex spaces, in particular, for the space Cp(X) of continuous real‐valued functions on a Tychonoff space X equipped with the…”
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Dunford–Pettis type properties and the Grothendieck property for function spaces
Published in Revista matemática complutense (2020)“…For a Tychonoff space X , let C k ( X ) and C p ( X ) be the spaces of real-valued continuous functions C ( X ) on X endowed with the compact-open topology and…”
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On T-Characterized Subgroups of Compact Abelian Groups
Published in Axioms (01-06-2015)“…A sequence \(\{ u_n \}_{n\in \omega}\) in abstract additively-written Abelian group \(G\) is called a \(T\)-sequence if there is a Hausdorff group topology on…”
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Positive definite functions and dual pairs of locally convex spaces
Published in Rocznik Akademii Górniczo-Hutniczej im. Stanisława Staszica. Opuscula Mathematica (2018)“…Using pairs of locally convex topological vector spaces in duality and topologies defined by directed families of sets bounded with respect to the duality, we…”
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Free Subspaces of Free Locally Convex Spaces
Published in Journal of function spaces (01-01-2018)“…If X and Y are Tychonoff spaces, let L(X) and L(Y) be the free locally convex space over X and Y, respectively. For general X and Y, the question of whether…”
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Dunford–Pettis type properties and the Grothendieck property for function spaces
Published in Revista matemática complutense (01-09-2020)Get full text
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Gelfand–Phillips Type Properties of Locally Convex Spaces
Published in Mathematics (Basel) (12-11-2024)“…We let 1≤p≤q≤∞. Being motivated by the classical notions of the Gelfand–Phillips property and the (coarse) Gelfand–Phillips property of order p of Banach…”
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Local completeness of $$C_{k}(X)
Published in Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A, Matemáticas (01-10-2023)Get full text
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Free topological vector spaces
Published in Topology and its applications (01-06-2017)“…In this paper the free topological vector space V(X) over a Tychonoff space X is defined and studied. It is proved that V(X) is a kω-space if and only if X is…”
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Gelfand--Phillips type properties of locally convex spaces
Published 11-06-2024“…Let $1\leq p\leq q\leq\infty.$ Being motivated by the classical notions of the Gelfand--Phillips property and the (coarse) Gelfand--Phillips property of order…”
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Weakly and weak$^\ast$ $p$-convergent operators
Published 19-05-2024“…Let $p\in[1,\infty]$. Being motivated by weakly $p$-convergent and weak$^\ast$ $p$-convergent operators between Banach spaces introduced by Fourie and Zeekoei,…”
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