Results 31 to 40 of about 637,479 (268)
Unconditionality, Fourier multipliers and Schur multipliers [PDF]
Colloquium Mathematicum, 2012 minor corrections; 17 pages ; to appear in Colloquium ...
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A Class of Unbounded Fourier Multipliers on the Unit Complex Ball
Abstract and Applied Analysis, 2014 We introduce a class of Fourier multiplier operators Mb on n-complex unit sphere, where the symbol b∈Hs(Sω). We obtained the Sobolev boundedness of Mb. Our result implies that the operators Mb take a role of fractional differential operators on ∂𝔹.
Pengtao Li, Jianhao Lv, Tao Qian
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Existence of Solution of Space–Time Fractional Diffusion-Wave Equation in Weighted Sobolev Space
Advances in Mathematical Physics, 2020 In this paper, we consider Cauchy problem of space-time fractional diffusion-wave equation. Applying Laplace transform and Fourier transform, we establish the existence of solution in terms of Mittag-Leffler function and prove its uniqueness in weighted ...
Kangqun Zhang
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Commutators for Fourier multipliers on Besov Spaces
Journal of Approximation Theory, 2004 If T is any bounded linear operator on Besov spaces Bpσj,qj(Rn)(j=0,1, and ...
Joan Cerdà, Joaquim Martín
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Reproducing Formulas for the Fourier-Like Multipliers Operators in q-Rubin Setting
International Journal of Analysis and Applications, 2020 The aim of this work is to study of the q^2 -Fourier multiplier operators on R_q and we give for them Calderon’s reproducing formulas and best approximation on the q^2-analogue Sobolev type space H_q using the theory of q^2-Fourier transform and ...
Ahmed Saoudi
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NONCOMMUTATIVE DE LEEUW THEOREMS
Forum of Mathematics, Sigma, 2015 Let $\text{H}$ be a subgroup of some locally compact group $\text{G}$. Assume that $\text{H}$ is approximable by discrete subgroups and that $\text{G}$ admits neighborhood bases which are almost invariant under conjugation by finite subsets of $\text{H}$.
MARTIJN CASPERS +3 more
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High performance and resource efficient FFT processor based on CORDIC algorithm
EURASIP Journal on Advances in Signal Processing, 2022 Fast Fourier Transform is widely used in communication and signal processing. I propose an improved multipath delay commutator pipelining architecture based on the radix-2 time decimation algorithm.
Yupu Zhao, Hong Lv, Jun Li, Lulu Zhu
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Sensors, 2022 Realising a low-complexity Farrow channelisation algorithm for multi-standard receivers in software-defined radio is a challenging task. A Farrow filter operates best at low frequencies while its performance degrades towards the Nyquist region.
Temidayo O. Otunniyi +1 more
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Absolute Dilation of Fourier Multipliers
International Mathematics Research NoticesAbstract Let $ {\mathcal M}$ be a von Neumann algebra equipped with a normal semifinite faithful (nsf) trace. We say that an operator $ T:{\mathcal M} \to{\mathcal M} $ is absolutely dilatable if there exist another von Neumann algebra $ M $ with an nsf trace, a unital normal trace preserving $\ast $-homomorphism $ J: {\mathcal M} \to M $
Merdy, Christian Le, Zadeh, Safoura
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Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
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