最終更新日：2025/12/06
In approximation theory, a Haar space is a finite-dimensional subspace of C(X, K) such that for any f ∈ C(X, K) there is exactly one element of the subspace that approximates f best in the supremum norm.
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In approximation theory, a Haar space is a finite-dimensional subspace of C(X, K) such that for any f ∈ C(X, K) there is exactly one element of the subspace that approximates f best in the supremum norm.
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