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凸包的概念主要存在于计算几何学。在CFD中,凸包可用于分析带状系统的带宽。在下图中的给定带状系统(矩阵),灰色的线即表示其凸包。即使对其进行填入操作,填入的非$0$元素也在凸包之内。凸包越小,可能得填入带来的附加存储越小。