Results 31 to 40 of about 147,239 (238)
Finding antipodal point grasps on irregularly shaped objects [PDF]
, 1992 Two-finger antipodal point grasping of arbitrarily shaped smooth 2-D and 3-D objects is considered. An object function is introduced that maps a finger contact space to the object surface. Conditions are developed to identify the feasible grasping region,
Burdick, Joel W., Chen, I-Ming
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Spatiospectral concentration of vector fields on a sphere [PDF]
, 2013 We construct spherical vector bases that are bandlimited and spatially concentrated, or, alternatively, spacelimited and spectrally concentrated, suitable for the analysis and representation of real-valued vector fields on the surface of the unit sphere,
Plattner, Alain, Simons, Frederik J.
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Dimension-Free Estimates for the Discrete Spherical Maximal Functions
International Mathematics Research Notices, 2023 Abstract We prove that the discrete spherical maximal functions (in the spirit of Magyar, Stein, and Wainger) corresponding to the Euclidean spheres in $\mathbb {Z}^{d}$ with dyadic radii have $\ell ^{p}(\mathbb {Z}^{d})$ bounds for all $p\in [2, \infty ]$ independent of the dimensions $d\ge 5$.
Mirek, M., Szarek, T.Z., Wróbel, B.
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An Lp−Lq version of Hardy's theorem for spherical Fourier transform on semisimple Lie groups
International Journal of Mathematics and Mathematical Sciences, 2004 We consider a real semisimple Lie group G with finite center and K a maximal compact subgroup of G. We prove an Lp−Lq version of Hardy's theorem for the spherical Fourier transform on G.
S. Ben Farah, K. Mokni, K. Trimèche
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On the unramified spectrum of spherical varieties over p-adic fields [PDF]
, 2008 The description of irreducible representations of a group G can be seen as a question in harmonic analysis; namely, decomposing a suitable space of functions on G into irreducibles for the action of G x G by left and right multiplication. For a split p-
Sakellaridis, Yiannis
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Sparse bounds for spherical maximal functions [PDF]
Journal d'Analyse Mathématique, 2019 We consider the averages of a function $ f$ on $ \mathbb R ^{n}$ over spheres of radius $ 0< r< \infty $ given by $ A_{r} f (x) = \int_{\mathbb S ^{n-1}} f (x-r y) \; d (y)$, where $ $ is the normalized rotation invariant measure on $ \mathbb S ^{n-1}$.
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Beilstein Journal of Nanotechnology, 2019 At this time, there is no instrument capable of measuring a nano-object along the three spatial dimensions with a controlled uncertainty. The combination of several instruments is thus necessary to metrologically characterize the dimensional properties ...
Loïc Crouzier +9 more
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On families between the Hardy–Littlewood and spherical maximal functions [PDF]
Arkiv för Matematik, 2021 We study a family of maximal operators that provides a continuous link connecting the Hardy-Littlewood maximal function to the spherical maximal function. Our theorems are proved in the multilinear setting but may contain new results even in the linear case.
Georgios Dosidis, Loukas Grafakos
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Lacunary Discrete Spherical Maximal Functions
, 2018 We prove new $\ell ^{p} (\mathbb Z ^{d})$ bounds for discrete spherical averages in dimensions $ d \geq 5$. We focus on the case of lacunary radii, first for general lacunary radii, and then for certain kinds of highly composite choices of radii.
Kesler, Robert +2 more
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Geodesy and Geodynamics, 2018 The analysis of Earth’s crust movement vertical velocities was made both for separate regions, and averaged on regions. As input data coordinates and velocities of earth crust points, obtained in International Coordinate Systems ITRF2000, ITRF2005 ...
N.A. Chujkova +3 more
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