Results 21 to 30 of about 13,837 (237)

Optimally Sparse Frames [PDF]

, 2011
Frames have established themselves as a means to derive redundant, yet stable decompositions of a signal for analysis or transmission, while also promoting sparse expansions.
Casazza, Peter G., Heinecke, Andreas, Krahmer, Felix, Kutyniok, Gitta   +3 more
core   +1 more source

Median Bernoulli Numbers and Ramanujan’s Harmonic Number Expansion

Mathematics, 2022
Ramanujan-type harmonic number expansion was given by many authors. Some of the most well-known are: Hn∼γ+logn−∑k=1∞Bkk·nk, where Bk is the Bernoulli numbers.
Kwang-Wu Chen
semanticscholar   +1 more source

Normal gravity field in relativistic geodesy

, 2018
Modern geodesy is subject to a dramatic change from the Newtonian paradigm to Einstein's theory of general relativity. This is motivated by the ongoing advance in development of quantum sensors for applications in geodesy including quantum gravimeters ...
Han, Wen-Biao, Kopeikin, Sergei M., Vlasov, Igor Yu.   +2 more
core   +1 more source

The Chrono-geometrical Structure of Special and General Relativity: a Re-Visitation of Canonical Geometrodynamics [PDF]

, 2006
A modern re-visitation of the consequences of the lack of an intrinsic notion of instantaneous 3-space in relativistic theories leads to a reformulation of their kinematical basis emphasizing the role of non-inertial frames centered on an arbitrary ...
Alba D., Alba D., Christodoulou D., De Pietri R., Dorato M., Faddeev L. D., Henneaux M., LUCA LUSANNA, Lusanna L., Lusanna L., Møller C., Schouten J. A., Stewart J., Teitelboim C.   +13 more
core   +2 more sources

Conformal Galilei groups, Veronese curves, and Newton-Hooke spacetimes [PDF]

, 2011
Finite-dimensional nonrelativistic conformal Lie algebras spanned by polynomial vector fields of Galilei spacetime arise if the dynamical exponent is z=2/N with N=1,2,....
Duval, Christian, Horvathy, Peter
core   +6 more sources

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Separability of reproducing kernel spaces

, 2016
We demonstrate that a reproducing kernel Hilbert or Banach space of functions on a separable absolute Borel space or an analytic subset of a Polish space is separable if it possesses a Borel measurable feature ...
Owhadi, Houman, Scovel, Clint
core   +1 more source

From Clinic to Computation: Multiscale Bioengineering Strategies for Durable Biological Aortic Valve Replacements

Advanced Functional Materials, EarlyView.
Bioprosthetic aortic valves have revolutionized the treatment of aortic stenosis, but their durability is limited by structural valve deterioration (SVD). This review focuses on the pericardial tissue at the heart of these valves, examining how its mechanical properties and calcification drive fatigue and failure.
Gabriele Greco, Pierfrancesco Gaziano, Serena Anglese, Simone Morganti, Carlo de Vincentiis, Ferdinando Auricchio, Michele Marino, Michele Conti   +7 more
wiley   +1 more source

On Four-Point Functions of Half-BPS Operators in General Dimensions

, 2004
We study four-point correlation functions of half-BPS operators of arbitrary weight for all dimensions d=3,4,5,6 where superconformal theories exist. Using harmonic superspace techniques, we derive the superconformal Ward identities for these correlators
A. Galperin, A. Galperin, A. Galperin, A. Galperin, B. Eden, B. Eden, E. Witten, E. Witten, E.T. Whitteker, Emery Sokatchev, F.A. Dolan, Francis A Dolan, H. Jack, H. Lu, J. Fuchs, J.M. Maldacena, Laurent Gallot, M. Cvetic, M. Nirschl, P. Heslop, P.J. Heslop, P.J. Heslop, P.J. Heslop, P.S. Howe, P.S. Howe, P.S. Howe, S. Ferrara, S. Ferrara, S. Ferrara, S.-M. Lee, V. Balasubramanian, V.K. Dobrev   +31 more
core   +1 more source

Lorentzian regularization and the problem of point-like particles in general relativity [PDF]

, 2000
The two purposes of the paper are (1) to present a regularization of the self-field of point-like particles, based on Hadamard's concept of ``partie finie'', that permits in principle to maintain the Lorentz covariance of a relativistic field theory, (2)
Bel L., Blanchet L., Blanchet L., Blanchet L., Blanchet L., Damour T., de Andrade V. C., Estrada R., Estrada R., Guillaume Faye, Jaranowski P., Jaranowski P., Jones D. S., Kopejkin S. M., Lorentz H. A., Lorentz H. A., Luc Blanchet, Schäfer G., Schäfer G., Sellier A.   +19 more
core   +2 more sources