在矩形域上对双变量分形插值函数的数值集成
1Department of Mathematics, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, India.
概括
这项研究引入了一种新的碎形数值整合方法,用于两变量信号. 这种方法为矩形数据集提供了精确的集成,并减少了对矩形数据集的计算力度.
科学领域:
- 数字分析 数字分析
- 碎形几何学 碎形几何学
- 科学计算科学计算
背景情况:
- 传统的数值集成方法可能是计算密集的.
- 碎形插值函数为函数近似提供了一种数据驱动的方法.
研究的目的:
- 为矩形区域的双变量数据推导一个碎形数值集成方法.
- 为了提高精度和减少数值集成中的计算力度.
- 分析拟议的碎形集成方法的收性质.
主要方法:
- 使用双变量分数插值函数的递归关系,构建分数的数值积分.
- 从数据点对代函数系统系数的评估.
- 基于这些系数的整合公式的推导.
- 与二线式插值函数的相关性.
- 导出垂直缩放因子公式以最大限度地减少近似误差.
主要成果:
- 提出了一种新的碎形数值积分公式.
- 该方法通过最小的计算来证明准确的结果.
- 建立了碎形方法与传统双重整合的融合.
- 对基准函数的数值分析验证了拟议的技术.
结论:
- 拟议的分形数值整合方法对于双变量数据有效.
- 该方法为传统技术提供了有效和准确的替代方案.
- 导出的垂直缩放因子有助于减少错误和趋同证明.
相关概念视频
Line, Surface, and Volume Integrals
2.4K
A line integral for a vector field is defined as the integral of the dot product of a vector function with an infinitesimal displacement vector along a prescribed path. If the prescribed path is closed, the integrals reduce to a closed-line integral. The closed-contour integral of the vector field is referred to in terms of the circulation of the vector field around the closed path. A vector with zero circulation around every closed path is called a conservative field, while one with non-zero...
2.4K
Rectangular and Triangular Pulse Function
805
The unit rectangular pulse function is mathematically represented by a rectangular function centered at the origin with a height of one unit. This function is defined by two parameters: T, which specifies the center location of the pulse along the time axis, and τ, which determines the pulse duration.
For example, consider a rectangular pulse with a 5V amplitude, a 3-second duration, and centered at t=2 seconds. This pulse can be expressed using the rectangular function, written as,
For example, consider a rectangular pulse with a 5V amplitude, a 3-second duration, and centered at t=2 seconds. This pulse can be expressed using the rectangular function, written as,
805
Trigonometric Fourier series
303
Fourier series is a foundational mathematical technique that decomposes periodic functions into an infinite series of sinusoidal harmonics. This method enables the representation of complex periodic signals as sums of simple sine and cosine functions, facilitating their analysis and interpretation in various fields, including signal processing, acoustics, and electrical engineering.
The trigonometric Fourier series specifically expresses a periodic function with a defined period T using sine...
The trigonometric Fourier series specifically expresses a periodic function with a defined period T using sine...
303
Linear Approximation in Frequency Domain
116
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
116
Areas Within Irregular Boundaries
97
Calculating areas within irregular boundaries, such as along rivers or curved roads, is crucial in various fields, including surveying, engineering, and environmental management. Surveyors often begin by creating a traverse, a connected series of straight lines approximating the area's boundary. The coordinates of each traverse point are essential for calculating the enclosed area. The double meridian distance formula is a widely used technique for this purpose. This method utilizes the...
97
Convergence of Fourier Series
177
The Fourier series is a powerful mathematical tool for representing periodic signals as an infinite sum of complex exponentials. In practice, this infinite series is truncated to a finite number of terms, yielding a partial sum. This truncation makes the approximation of the signal feasible but introduces certain challenges, particularly near discontinuities, known as the Gibbs phenomenon.
The Gibbs phenomenon refers to the persistent oscillations and overshoots that occur near discontinuities...
The Gibbs phenomenon refers to the persistent oscillations and overshoots that occur near discontinuities...
177


