Theorems · Theorem · real analysis
continuousAt_iff_continuous_left_right
∀ {α : Type u_1} {β : Type u_2} [inst : TopologicalSpace α] [inst_1 : LinearOrder α] [inst_2 : TopologicalSpace β]
{a : α} {f : α → β}, ContinuousAt f a ↔ ContinuousWithinAt f (Set.Iic a) a ∧ ContinuousWithinAt f (Set.Ici a) a- Defined in
- Mathlib.Topology.Order.LeftRight
- Cited by
- 6 results in Mathlib
- Foundations
- Depth 65 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites9
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- TopologicalSpacestatement and proof · cited by 24,529
- LinearOrderstatement and proof · cited by 8,572
- nhdsproof · cited by 5,554
- Filter.Tendstoproof · cited by 3,814
- Set.Iicstatement · cited by 1,111
- Set.Icistatement · cited by 1,070
- ContinuousAtstatement · cited by 697
- ContinuousWithinAtstatement · cited by 512
- nhdsLE_sup_nhdsGEproof · cited by 3
Cited by6
Results whose statement or proof uses this declaration.
- continuousAt_of_monotoneOn_of_closure_image_mem_nhdsproof · cited by 2
- continuousAt_iff_continuous_left'_right'proof · cited by 1
- StrictMonoOn.continuousAt_of_closure_image_mem_nhdsproof · cited by 1
- Continuous.of_ordContinuousproof · cited by 0
- continuousAt_of_monotoneOn_of_exists_betweenproof · cited by 0
- StrictMonoOn.continuousAt_of_exists_betweenproof · cited by 0