inclusion — Mathlib

English

The inclusion from OpenNhds x to Opens X is defined pointwise by mapping each neighborhood to its underlying open set.

Русский

Включение из OpenNhds x в Opens X определяется по точкам, сопоставляя каждой окрестности соответствующее открытое множество.

LaTeX

$$def inclusion (x : X) : OpenNhds x ⥤ Opens X := ObjectProperty.ι _$$

Lean4

/-- The inclusion functor from open neighbourhoods of `x`
to open sets in the ambient topological space. -/
def inclusion (x : X) : OpenNhds x ⥤ Opens X :=
  ObjectProperty.ι _

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