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Theorems · Theorem · functional analysis

Summable.of_norm_bounded

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

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

Defined in
Mathlib.Analysis.Normed.Group.InfiniteSum
Cited by
25 results in Mathlib
Foundations
Depth 166 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_norm · cited by 40Summable.of_normsummable_norm_iff · cited by 8summable_norm_iffHurwitzKernelBounds.summable_f_nat · cited by 5HurwitzKernelBounds.summa…hasFDerivAt_jacobiTheta₂ · cited by 4hasFDerivAt_jacobiTheta₂summable_jacobiTheta₂_term_iff · cited by 4summable_jacobiTheta₂_ter…Summable.of_nnnorm_bounded · cited by 4Summable.of_nnnorm_boundedPeriodPair.summable_weierstrassPExceptSummand · cited by 3PeriodPair.summable_weier…tendsto_tsum_of_dominated_convergence · cited by 2tendsto_tsum_of_dominated…MeasureTheory.hasSum_integral_of_summable_integral_norm · cited by 2MeasureTheory.hasSum_inte…summable_jacobiTheta₂'_term_iff · cited by 2summable_jacobiTheta₂'_te…summable_jacobiTheta₂_term_fderiv_iff · cited by 2summable_jacobiTheta₂_ter…HurwitzZeta.hasSum_int_completedCosZeta · cited by 2HurwitzZeta.hasSum_int_co…iteratedFDeriv_tsum · cited by 2iteratedFDeriv_tsumEisensteinSeries.summable_sigma_mul_cexp_pow · cited by 2EisensteinSeries.summable…summable_of_ratio_norm_eventually_le · cited by 2summable_of_ratio_norm_ev…Real · cited by 25697RealNorm.norm · cited by 5413Norm.normSeminormedAddCommGroup · cited by 2671SeminormedAddCommGroupCompleteSpace · cited by 2532CompleteSpaceSummationFilter.unconditional · cited by 2068SummationFilter.unconditi…Summable · cited by 778Summablesummable_iff_cauchySeq_finset · cited by 9summable_iff_cauchySeq_fi…cauchySeq_finset_of_norm_bounded · cited by 6cauchySeq_finset_of_norm_…Summable.of_norm_boundedCITED BYCITES

Cites8

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Cited by25

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