Let $f\in C(S^{1},M_{n}(\mathbb{C}))$ be a unitary. Does there exist an analytic unitary function $g$ from $S^{1}$ to $M_{n}(\mathbb{C})$ that approximates $f$?
2026-03-30 03:58:32.1774843112
Approximation of certain continuous functions by analytic functions
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