English
Affine spaces are associative under product, up to a continuous affine equivalence: (P₁ × P₂) × P₃ ≃ᴬ[k] P₁ × (P₂ × P₃).
Русский
Аффинные пространства ассоциативны по произведению, до непрерывной аффинной эквивалентности: (P₁ × P₂) × P₃ ≃ᴬ[k] P₁ × (P₂ × P₃).
LaTeX
$$$\text{prodAssoc} : (P_1 \times P_2) \times P_3 \simeq_{Aff}^k P_1 \times (P_2 \times P_3).$$$
Lean4
/-- A continuous map of affine spaces -/
@[term_parser 1000]
public meta def «term_→ᴬ[_]_» : Lean.TrailingParserDescr✝ :=
ParserDescr.trailingNode✝ `«term_→ᴬ[_]_» 25 0
(ParserDescr.binary✝ `andthen
(ParserDescr.binary✝ `andthen
(ParserDescr.binary✝ `andthen (ParserDescr.symbol✝ " →ᴬ[") (ParserDescr.cat✝ `term 0))
(ParserDescr.symbol✝ "] "))
(ParserDescr.cat✝ `term 0))