term∑'[_]_,_ — Mathlib

English

If g is injective, then HasProd f a with respect to the map L.map g is equivalent to HasProd (f ∘ g) a with respect to L.

Русский

Если g внедримо, то HasProd f a по L.map g эквивалентно HasProd (f ∘ g) a по L.

LaTeX

$$$ HasProd f a (L.map ⟨g, hg⟩) \leftrightarrow HasProd (f \circ g) a L $$$

Lean4

@[inherit_doc tsum, term_parser 1000]
public meta def «term∑'[_]_,_» : Lean.ParserDescr✝ :=
  ParserDescr.node✝ `«term∑'[_]_,_» 1022
    (ParserDescr.binary✝ `andthen
      (ParserDescr.binary✝ `andthen
        (ParserDescr.binary✝ `andthen
          (ParserDescr.binary✝ `andthen
            (ParserDescr.binary✝ `andthen (ParserDescr.symbol✝ "∑'[") (ParserDescr.cat✝ `term 0))
            (ParserDescr.symbol✝ "]"))
          Batteries.ExtendedBinder.extBinders)
        (ParserDescr.symbol✝ ", "))
      (ParserDescr.cat✝ `term 67))

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