Results 11 to 20 of about 2,864,348 (299)
Operator-valued Semicircular Elements: Solving A Quadratic Matrix Equation with Positivity Constraints [PDF]
International Mathematics Research Notices, 2007 We show that the quadratic matrix equation $VW + \eta (W)W = I$, for given $V$ with positive real part and given analytic mapping $\eta$ with some positivity preserving properties, has exactly one solution $W$ with positive real part.
J. Helton, R. Far, R. Speicher
semanticscholar +4 more sources
Calretinin Immunoreactivity in the VIIIth Nerve and Inner Ear Endorgans of Ranid Frogs
Frontiers in Neuroscience, 2021 Calcium-binding proteins are essential for buffering intracellular calcium concentrations, which are critical for regulating cellular processes involved in neuronal computations. One such calcium-binding protein, calretinin, is present in many neurons of
Ingrid Reichenberger +2 more
doaj +1 more source
A Compact Four-Port MIMO Antenna for UWB Applications
Sensors, 2022 A compact four-port multiple-input multiple-output (MIMO) antenna for ultrawideband (UWB) applications is presented in this paper. The proposed antenna has four unit cell antennas. Each unit cell is placed orthogonal to its adjacent elements.
Aiting Wu +3 more
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On the enigma of Palaenigma wrangeli (Schmidt), a conulariid with a partly non-mineralized skeleton [PDF]
PeerJ, 2021 Palaenigma wrangeli (Schmidt) is a finger-sized fossil with a tetraradiate conical skeleton; it occurs as a rare component in fossiliferous Upper Ordovician strata of the eastern Baltic Basin and is known exclusively from north Estonia.
Björn Kröger +5 more
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Electronic Research Archive, 2020 In this paper, we study the Banach \begin{document}$ * $\end{document} -probability space \begin{document}$ (A\otimes_{\Bbb{C}}\Bbb{LS}, $\end{document} \begin{document}$ \tau_{A}^{0}) $\end{document} generated by a fixed unital \begin{document}$ C^{*} $\
Ilwoo Cho
semanticscholar +1 more source
The Brown measure of the sum of a self-adjoint element and an imaginary multiple of a semicircular element [PDF]
Letters in Mathematical Physics, 2022 50 pages and 9 figures. Minor revisions in this version.
Brian C. Hall, Ching-Wei Ho
openaire +3 more sources
A Wide Frequency Scanning Printed Bruce Array Antenna with Bowtie and Semi-Circular Elements
Sensors, 2020 A printed edge-fed counterpart of the wire Bruce array antenna, for frequency scanning applications, is presented in this paper. The unit-cell of the proposed antenna consists of bowtie and semi-circular elements to achieve wide bandwidth from below 22 ...
Zeeshan Ahmed +2 more
doaj +1 more source
Engineering Science and Technology, an International Journal, 2022 Oil-based nanofluids are used to strengthen the stability of nanofluids as well as their thermophysical properties when they are exposed to high temperatures.
Rumman Hossain +3 more
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Immittance Spectroscopy of Smart Components and Novel Devices [PDF]
, 1994 AC small-signal immittance spectroscopy is employed as a viable tool to demonstrate electrical characterization, performance improvement, and quality assurance issues of smart materials-based components and novel devices. The variation in the ac response,
Alim, Mohammad Anwarul +2 more
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A Note on Rate of Convergence in Probability to Semicircular Law [PDF]
, 2011 In the present paper, we prove that under the assumption of the finite sixth moment for elements of a Wigner matrix, the convergence rate of its empirical spectral distribution to the Wigner semicircular law in probability is $O(n^{-1/2})$ when the ...
Bai, Zhidong +3 more
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