Theorems · Theorem · group theory
FreeAddSemigroup.head_add
∀ {α : Type u} (x y : FreeAddSemigroup α), (x + y).head = x.head- Defined in
- Mathlib.Algebra.Free
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- Foundations
- Depth 11 from the axioms · uses propext
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- FreeAddSemigroupstatement and proof · cited by 43
- FreeAddSemigroup.headstatement · cited by 6
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