term⨁_,_ — Mathlib

English

Further verifications that linearity in the second argument holds.

Русский

Дальнейшие проверки линейности во втором аргументе.

LaTeX

$$$\\text{more bilinearity checks}$$$

Lean4

/-- `⨁ i, f i` is notation for `DirectSum _ f` and equals the direct sum of `fun i ↦ f i`.
Taking the direct sum over multiple arguments is possible, e.g. `⨁ (i) (j), f i j`. -/
@[scoped term_parser 1000]
public meta def «term⨁_,_» : Lean.ParserDescr✝ :=
  ParserDescr.node✝ `DirectSum.«term⨁_,_» 1022
    (ParserDescr.binary✝ `andthen
      (ParserDescr.binary✝ `andthen
        (ParserDescr.binary✝ `andthen (ParserDescr.symbol✝ "⨁") Batteries.ExtendedBinder.extBinders)
        (ParserDescr.symbol✝ ", "))
      (ParserDescr.cat✝ `term 0))

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