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topology.algebra.ordered.left_right

Left and right continuity #

In this file we prove a few lemmas about left and right continuous functions:

Tags #

left continuous, right continuous

theorem continuous_within_at_Ioi_iff_Ici {α : Type u_1} {β : Type u_2} [topological_space α] [partial_order α] [topological_space β] {a : α} {f : α → β} :
theorem continuous_within_at_Iio_iff_Iic {α : Type u_1} {β : Type u_2} [topological_space α] [partial_order α] [topological_space β] {a : α} {f : α → β} :
theorem nhds_left_sup_nhds_right {α : Type u_1} [topological_space α] [linear_order α] (a : α) :
theorem nhds_left'_sup_nhds_right {α : Type u_1} [topological_space α] [linear_order α] (a : α) :
theorem nhds_left_sup_nhds_right' {α : Type u_1} [topological_space α] [linear_order α] (a : α) :
theorem continuous_at_iff_continuous_left_right {α : Type u_1} {β : Type u_2} [topological_space α] [linear_order α] [topological_space β] {a : α} {f : α → β} :
theorem continuous_at_iff_continuous_left'_right' {α : Type u_1} {β : Type u_2} [topological_space α] [linear_order α] [topological_space β] {a : α} {f : α → β} :