你能找到一个与 N 个向量都不正交的向量吗？
本文探讨了一个有趣的线性代数问题：给定 N 个非零向量，是否总能找到一个向量与它们每一个都不正交？作者从二维和三维空间的直观例子出发，逐步推广到高维情况，并给出了构造性证明。文章还讨论了该问题的实际应用背景，以及相关的几何直觉。
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