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Theorems · Definition · group theory

Monoid.CoprodI.lift

{ι : Type u_1} →
  {M : ι → Type u_2} →
    [inst : (i : ι) → Monoid (M i)] →
      {N : Type u_3} → [inst_1 : Monoid N] → ((i : ι) → M i →* N) ≃ (Monoid.CoprodI M →* N)

A map out of the free product corresponds to a family of maps out of the summands. This is the universal property of the free product, characterizing it as a categorical coproduct.

Defined in
Mathlib.GroupTheory.CoprodI
Cited by
21 results in Mathlib
Foundations
Depth 49 from the axioms · uses propext, Quot.sound
Assumes
MonoidMonoid

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