（2）引入紧支（Compact Support）概念，认为点x处的值z只受x附近子域内的节点影响（这个子域称作点x的影响区域），影响区域外的节点对x的取值没有影响。
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Compact Support Set 紧支撑集
Compact support thin plate splines 紧支撑薄板样条插值变换
compact-support 紧支撑
non-compact support 非紧支集
Function of compact support 支撑集
Global Compact Support System 全球化战斗支援系统
function with compact support 有紧支的函数
scale function with compact support 紧支集边尺度函数
Compared with conventional wavelet, multi-wavelet is simultaneously orthogonality, compact support, symmetry and vanishing moment.
和小波相比,多小波同时具有正交性、紧支撑性、对称性和高阶消失矩等优点。
参考来源 - 基于小波神经网络的模拟电路故障诊断方法研究Inparticular, multi-wavelets not only have good properties of single wavelet, butalso overcome the defect which single wavelet can’t simultaneously possesssymmetry, orthogonality and compact support.
特别是多小波不仅具有单小波的良好性质，而且克服了单小波不能同时具有对称性、正交性、紧支撑性的缺陷。
参考来源 - 一种多小波的构造·2,447,543篇论文数据，部分数据来源于NoteExpress
In particular, for the case of small initial data with compact support, the author gives the life-span of classical solutions and its application to nonlinear wave equations.
特别地，对紧支集小初值的情况，给出了经典解的生命区间及其在非线性波动方程中的应用。
In this paper, we give an algorithm of construction compact support bivariate orthogonal scaling function whose dilation matrix is 2i, the correspond wavelets are also offered.
本文给出构造矩阵伸缩为2i的紧支撑二元正交尺度函数的一种算法，得到相应的小波函数。
Both initiatives were established with the critical support of the Global Compact.
两项倡议的建立都得到了全球契约的关键支持。
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