OAI/RepresentationTheory/FoulkesHowe/SymmetricDual.lean

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  1. theorem OAI.Problem346.symPowDual_injective_of_pure_evaluation line 14

    Source documentation

    A symmetric-power duality map is injective as soon as evaluation on pure powers agrees with evaluation in the symmetric algebra.

    theorem symPowDual_injective_of_pure_evaluation (n : ℕ)
        (B : SymPow n (Module.Dual ℂ V) →ₗ[ℂ] Module.Dual ℂ (SymPow n V))
        (hB : ∀ (p : SymPow n (Module.Dual ℂ V)) (x : V),
          B p (symMonomial n V (fun _ => x)) =
            SymmetricAlgebra.lift (Module.Dual.eval ℂ V x) p.val) :
        Function.Injective B := by
    …

    Mentions: OAI.Problem346.SymPow, OAI.Problem346.symMonomial