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Theorems · Theorem · functional analysis

Summable.of_norm_bounded_eventually

∀ {ι : Type u_1} {E : Type u_3} [inst : SeminormedAddCommGroup E] [CompleteSpace E] {f : ι → E} {g : ι → ℝ},
  Summable g → (∀ᶠ (i : ι) in Filter.cofinite, ‖f i‖ ≤ g i) → Summable f

Variant of the direct comparison test for series: if the norm of f is eventually bounded by a real function g which is summable, then f is summable.

Defined in
Mathlib.Analysis.Normed.Group.InfiniteSum
Cited by
13 results in Mathlib
Foundations
Depth 165 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
SeminormedAddCommGroupCompleteSpace

Around this declaration

Dashed lines are statement dependencies; solid lines are citations in proofs.

summable_of_isBigO · cited by 8summable_of_isBigOSummable.of_norm_bounded_eventually_nat · cited by 6Summable.of_norm_bounded_…FormalMultilinearSeries.ofScalars_radius_eq_top_of_tendsto · cited by 3FormalMultilinearSeries.o…Summable.hasProdUniformlyOn_one_add · cited by 3Summable.hasProdUniformly…FormalMultilinearSeries.inv_le_ofScalars_radius_of_tendsto · cited by 2FormalMultilinearSeries.i…summable_jacobiTheta₂'_term_iff · cited by 2summable_jacobiTheta₂'_te…summable_jacobiTheta₂_term_fderiv_iff · cited by 2summable_jacobiTheta₂_ter…Complex.summable_log_one_add_of_summable · cited by 2Complex.summable_log_one_…LSeriesSummable.congr' · cited by 2LSeriesSummable.congr'spectrum.exp_mem_exp · cited by 1spectrum.exp_mem_expcontDiff_tsum_of_eventually · cited by 1contDiff_tsum_of_eventual…ZLattice.summable_norm_sub_rpow · cited by 1ZLattice.summable_norm_su…Memℓp.of_exponent_ge · cited by 1Memℓp.of_exponent_geReal · cited by 25697RealNorm.norm · cited by 5413Norm.normFilter.Eventually · cited by 3134Filter.EventuallySeminormedAddCommGroup · cited by 2671SeminormedAddCommGroupCompleteSpace · cited by 2532CompleteSpaceSummationFilter.unconditional · cited by 2068SummationFilter.unconditi…Summable · cited by 778SummableFilter.cofinite · cited by 251Filter.cofinitesummable_iff_cauchySeq_finset · cited by 9summable_iff_cauchySeq_fi…cauchySeq_finset_of_norm_bounded_eventually · cited by 2cauchySeq_finset_of_norm_…Summable.of_norm_bounded_even…CITED BYCITES

Cites10

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Cited by13

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