 Annihilator of a vector subspace

ID: annihilator-of-a-vector-subspace

Codex  0 Created 2026-09-24 Updated 2026-10-03

For

U \leq V

U^{\circ} = {f \in V^{*} : f ∣_{U} = 0} .

In finite dimensions,

dim U^{\circ} = dim V - dim U

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