Theorems · Theorem · general topology
NNReal.nhds_zero_basis
(nhds 0).HasBasis (fun a => 0 < a) fun a => Set.Iio a
- Defined in
- Mathlib.Topology.Instances.NNReal.Lemmas
- Cited by
- 2 results in Mathlib
- Foundations
- Depth 120 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites5
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- nhdsstatement · cited by 5,554
- NNRealstatement · cited by 4,310
- Set.Iiostatement · cited by 1,166
- Filter.HasBasisstatement · cited by 604
- nhds_bot_basisproof · cited by 6
Cited by2
Results whose statement or proof uses this declaration.
- MeasureTheory.exists_eLpNorm_indicator_leproof · cited by 3
- MeasureTheory.exists_seq_tendstoInMeasure_atTop_iffproof · cited by 0