Results 1 to 10 of about 60,962 (264)
Mathematics, 2019 The purpose of this paper is to characterize the pre-dual of the spaces introduced by I. Fofana on the basis of Wiener amalgam spaces. These spaces have a specific dilation behaviour similar to the spaces L α ( R d ) .
Hans G. Feichtinger, Justin Feuto
doaj +3 more sources
Almost and Strongly Almost B(r ̃,s ̃,t ̃,u ̃)- Summable Double Sequences
Eurasian Journal of Science and Engineering, 2021 In this paper, we define some new almost and strongly almost convergent double sequence spaces B ̃(C_f), B ̃(C_f0), B ̃[C_f] and B ̃[C_f0] derived by the domain of four-dimensional sequential band matrix B(r ̃,s ̃,t ̃,u ̃) in the spaces C_f, C_f0 , [C_f]
Orhan Tuğ
doaj +1 more source
On locally Hilbert spaces [PDF]
Opuscula Mathematica, 2016 This is an investigation of some basic properties of strictly inductive limits of Hilbert spaces, called locally Hilbert spaces, with respect to their topological properties, the geometry of their subspaces, linear functionals and dual spaces.
Aurelian Gheondea
doaj +1 more source
On the Domain of the Four-Dimensional Sequential Band Matrix in Some Double Sequence Spaces
Mathematics, 2020 Let E represent any of the spaces M u , C ϑ ( ϑ = { b , b p , r } ) , and L q ( 0
Orhan Tuğ +2 more
doaj +1 more source
The dual of the space of bounded operators on a Banach space
Concrete Operators, 2021 Given Banach spaces X and Y, we ask about the dual space of the (X, Y). This paper surveys results on tensor products of Banach spaces with the main objective of describing the dual of spaces of bounded operators. In several cases and under a variety of
Botelho Fernanda, Fleming Richard J.
doaj +1 more source
Dual Spaces of Multiparameter Local Hardy Spaces
Journal of Function Spaces, 2021 In this paper, we study the duality theory of the multiparameter local Hardy spaces hpℝn1×ℝn2, and we prove that hpℝn1×ℝn2∗=cmopℝn1×ℝn2, where cmopℝn1×ℝn2 are defined by discrete Carleson measure.
Wei Ding, Feng Yu
doaj +1 more source
Web spaces and worldwide web spaces: topological aspects of domain theory [PDF]
Logical Methods in Computer Science, 2019 Web spaces, wide web spaces and worldwide web spaces (alias C-spaces) provide useful generalizations of continuous domains. We present new characterizations of such spaces and their patch spaces, obtained by joining the original topology with a second ...
Marcel Erné
doaj +1 more source
On some spaces of summable sequences and their duals
International Journal of Mathematics and Mathematical Sciences, 1986 Suppose that S is the space of all summable sequences α with ‖α‖S=supn≥0|∑j=n∞αj| and J the space of all sequences β of bounded variation with ‖β‖J=|β0|+∑j=1∞|βj−βj−1|.
Geraldo Soares de Souza, G. O. Golightly
doaj +1 more source
Nuclear Space Facts, Strange and Plain
Mathematics, 2016 We present a scenic but practical guide through nuclear spaces and their dual spaces, examining useful, unexpected, and often unfamiliar results both for nuclear spaces and their strong and weak duals.
Jeremy Becnel, Ambar Sengupta
doaj +1 more source
Orthogonality in smooth countably normed spaces
Journal of Inequalities and Applications, 2021 We generalize the concepts of normalized duality mapping, J-orthogonality and Birkhoff orthogonality from normed spaces to smooth countably normed spaces.
Sarah Tawfeek +2 more
doaj +1 more source