搜索结果: 1-9 共查到“数学 symbol”相关记录9条 . 查询时间(0.046 秒)
Discrete Symbol Calculus
sublinear complexity inversion of elliptic operators square root of elliptic operators
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2015/7/14
This paper deals with efficient numerical representation and manipulation of differential and integral operators as symbols in phase-space, i.e., functions of space x and frequency ξ. The symbol smoot...
Seismic wave extrapolation using lowrank symbol approximation
Decomposition Lowrank
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2015/7/14
We consider the problem of constructing a wave extrapolation operator in a variable and possibly anisotropic medium. Our construction involves Fourier transforms in space combined with the help of a l...
$L^p$ and Sobolev boundedness of pseudodifferential operators with non-regular symbol: a regularisation approach
Sobolev boundedness pseudodifferential operators non-regular symbol
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2010/11/11
In this paper we investigate $L^p$ and Sobolev boundedness of a certain class of pseudodifferential operators with non-regular symbols. We employ regularisation methods, namely convolution with a net ...
Coupling Property and Gradient Estimates of Lévy Processes via the Symbol
Coupling Property Gradient Estimates Lévy Processes via the Symbol
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2010/11/11
We derive explicitly the coupling property for the transition semigroup of a L\'evy process and gradient estimates for the associated semigroup of transition operators. This is based on the asymptoti...
Recurrence relation for the 6j-symbol of su_q(2) from an eigenvalue problem
Racah-Wigner coefficients 6j-symbol quantum group eigenvalue problem
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2010/12/3
A new, linear, three-term recurrence relation for the 6j-symbol of the quantum group suq(2) is derived. It is cast in the form of a symmetric eigenvalue problem, generalizing a result of Schulten and ...
Channel-coded Collision Resolution by Exploiting Symbol Misalignment
Channel-coded Collision Resolution Symbol Misalignment
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2010/12/9
In random-access networks, such as the IEEE 802.11 network, different users may transmit their packets simultaneously,resulting in packet collisions.
Semiclassical Mechanics of the Wigner $6j$-Symbol
Semiclassical Mechanics Wigner $6j$-Symbol
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2010/12/6
The semiclassical mechanics of the Wigner 6j-symbol is examined from the standpoint of WKB theory for multidimensional, integrable systems,to explore the geometrical issues surrounding the Ponzano-Reg...
HISTABRUT: A Maple Package for Symbol-Crunching in Probability theory
Maple Package Symbol-Crunching Probability theory
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2010/12/7
A Maple package HISTABRUT (available from ttp://www.math.rutgers.edu/~zeilberg/tokhniot/HISTABRUT)is presented and briefly described. It uses the polynomial ansatz to discover (often fully rigorously,...
Computer symbol calculation of invariants of three-manifolds obtained from trefoil knot
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2007/7/28
期刊信息
篇名
Computer symbol calculation of invariants of three-manifolds obtained from trefoil knot
语种
英文
撰写或编译
撰写
作者
李邦河,李起升,C.Peterson
第一作者单位
中科院数学与系统科学研究院
刊物名称
Chinese Science Bulletin (科学通报英文版)
页面
vol...