Mathlib Map

Structures · Order

Filter.NeBot

A filter is NeBot if it is not equal to , or equivalently the empty set does not belong to the filter. Bourbaki include this assumption in the definition of a filter but we prefer to have a CompleteLattice structure on Filter _, so we use a typeclass argument in lemmas instead.

Defined in
Mathlib.Order.Filter.Defs
Shape
One type argument · adds ne'

Extends0

Extends nothing: this is a root of the hierarchy.

Extended by0

Nothing extends this class yet.

Concrete types that are instances9

  • Rat
  • ENNReal
  • OnePoint
  • UpperHalfPlane
  • BoxIntegral.TaggedPrepartition
  • Prod
  • OrderDual
  • Set
  • Finset

How is a type an instance?

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Assumed by484

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No ancestors.