Mathematics, 15.08.2020 17:01 gbrightwell

Let G= { a∈ ℚ||| ≥ 1} ∪ {0}. Is a subgroup of (ℚ, +)? Explain

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Let G= { a∈ ℚ||| ≥ 1} ∪ {0}. Is a subgroup of (ℚ, +)? Explain...

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