HasBinaryProducts — Mathlib

English

The map coprod.map coprod.inl coprod.inr followed by codiag equals id on X ⨿ Y.

Русский

coprod.map coprod.inl coprod.inr затем codiag = id на X ⨿ Y.

LaTeX

$$$coprod.map coprod.inl coprod.inr \;\circ\; codiag (X ⨿ Y) = id_{X ⨿ Y}$$$

Lean4

/-- A category `HasBinaryProducts` if it has all limits of shape `Discrete WalkingPair`,
i.e. if it has a product for every pair of objects. -/
@[stacks 001T]
abbrev HasBinaryProducts :=
  HasLimitsOfShape (Discrete WalkingPair) C

Похожие утверждения