| 释义 |
dual space (analytic) A linear functional φ on a normed vector space V is bounded if there exists M such that |φ(v)| ≤ M∥v∥ for all vεV. The analytic dual space V' is the space of all bounded linear functionals on V with pointwise addition and scalar multiplication. V' is a Banach space, whether or not V is complete; the norm on V' is ∥φ∥ = sup{|φ(v)| : ∥v∥ = 1}.
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