arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.1297math.NAcs.NA
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非平稳细分格式的再现性质

On the reproduction properties of non-stationary subdivision schemes

Università di Firenze(佛罗伦萨大学);Università di Milano-Bicocca(米兰比可卡大学)

Costanza Conti, Lucia Romani

AI总结:

研究收敛的、单变量、二进、非平稳细分格式再现指数多项式空间的代数条件,并应用于构造具有指定再现性质的新非平稳细分格式。

摘要:

我们精确研究了收敛的、单变量、二进、非平稳细分格式的符号应满足的代数条件,以便再现指数多项式空间。如果对于从某个指数多项式函数均匀采样的任何初始数据,该格式在极限中产生相同的函数,则称细分格式具有再现指数多项式的性质。该性质的重要性在于,作为指数多项式组合获得的若干函数(如圆锥曲线、螺旋线或特殊三角函数和双曲函数)在图形和工程应用中非常受关注。由于指数多项式空间显然包含标准多项式,因此本文的结果将最近发展的多项式再现理论扩展到非平稳上下文。所推导的细分符号代数条件的一个重要应用是构造具有指定再现性质的新的非平稳细分格式。

英文摘要:

We present an accurate investigation of the algebraic conditions that the symbols of a convergent, univariate, binary, non-stationary subdivision scheme should fulfill in order to reproduce spaces of exponential polynomials. A subdivision scheme is said to possess the property of reproducing exponential polynomials if, for any initial data uniformly sampled from some exponential polynomial function, the scheme yields the same function in the limit. The importance of this property is due to the fact that several functions obtained as combinations of exponential polynomials (such as conic sections, spirals or special trigonometric and hyperbolic functions) are of great interest in graphical and engineering applications. Since the space of exponential polynomials trivially includes standard polynomials, the results in this work extend the recently developed theory on polynomial reproduction to the non-stationary context. A significant application of the derived algebraic conditions on the subdivision symbols is the construction of new non-stationary subdivision schemes with specified reproduction properties.

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