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Theorems · Theorem · group theory

AddSubgroup.list_sum_mem

∀ {G : Type u_1} [inst : AddGroup G] (K : AddSubgroup G) {l : List G}, (∀ x ∈ l, x ∈ K) → l.sum ∈ K

Sum of a list of elements in an AddSubgroup is in the AddSubgroup.

Defined in
Mathlib.Algebra.Group.Subgroup.Finite
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Foundations
Depth 60 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
AddGroup

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