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Theorems · Theorem · functional analysis

spectrum.hasDerivAt_resolvent_const_left

∀ {𝕜 : Type u_1} {A : Type u_2} [inst : NontriviallyNormedField 𝕜] [inst_1 : NormedRing A] [inst_2 : NormedAlgebra 𝕜 A]
  [CompleteSpace A] {a : A} {k : 𝕜}, k ∈ resolventSet 𝕜 a → HasDerivAt (resolvent a) (-resolvent a k ^ 2) k
Defined in
Mathlib.Analysis.Normed.Algebra.GelfandFormula
Cited by
3 results in Mathlib
Foundations
Depth 180 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
NontriviallyNormedFieldNormedRingNormedAlgebraCompleteSpace

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