Structures · Algebra
AddSubgroup.IsFiniteRelIndex
Typeclass for a subgroup H to have finite index in a subgroup K.
- Defined in
- Mathlib.GroupTheory.Index
- Shape
- 2 explicit arguments · adds relIndex_ne_zero
Extends0
Extends nothing: this is a root of the hierarchy.
Extended by0
Nothing extends this class yet.
Concrete types that are instances0
No instance on a concrete type; it is reached through other classes.
How is a type an instance?
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Assumed by10
- AddSubgroup.IsFiniteRelIndex.relIndex_ne_zero
- AddSubgroup.isFiniteRelIndex_of_le_left
- AddSubgroup.relIndex_ne_zero
- AddSubgroup.discreteTopology_iff_of_isFiniteRelIndex
- ProperlyDiscontinuousVAdd.ofFiniteRelIndex
- AddSubgroup.properlyDiscontinuousVAdd_iff_of_isFiniteRelIndex
- AddSubgroup.isFiniteRelIndex_of_le_right
- AddSubgroup.isFiniteRelIndex_of_le
- AddSubgroup.IsFiniteRelIndex.to_finiteIndex_addSubgroupOf
- AddSubgroup.finrank_eq_of_isFiniteRelIndex
Ancestors0
No ancestors.