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Invariant Series
Definition
An invariant series of a group G is a normal series I = A_0 ⊲A_1 ⊲...⊲A_r = G such that each A_i ⊲G, where H⊲G means that H is a normal subgroup of G.
Related terms
An invariant series of a group G is a normal series I = A_0 ⊲A_1 ⊲...⊲A_r = G such that each A_i ⊲G, where H⊲G means that H is a normal subgroup of G.