Non-Zero Orthogonal Vectors: Show m<=n

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The discussion centers on proving that for a set of non-zero pairwise orthogonal vectors {u1, u2, ..., um} within a subspace W of dimension n, the number of vectors m must satisfy the inequality m ≤ n. This conclusion is based on the properties of orthogonal vectors and the dimensionality of vector spaces. The proof relies on the fact that each orthogonal vector contributes a unique dimension to the subspace, thus limiting the total number of such vectors to the dimension of the space.

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squenshl
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I need some direction.
Suppose that{u1,u2,...,um} are non-zero pairwise orthogonal vectors (i.e., uj.ui=0 if i doesnt=j) of a subspace W of dimension n. Show that m<=n.
 
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