English
Constant functions with Diophantine codomain are Diophantine.
Русский
Постоянные функции с диагофантовым кодом диагофантовы.
LaTeX
$$$$\mathrm{DiophFn}(\mathrm{const} (\alpha \to \mathbb{N}) n)$$$$
Lean4
/-- Projection preserves Diophantine functions. -/
@[scoped term_parser 1000]
public meta def «termD&_» : Lean.ParserDescr✝ :=
ParserDescr.node✝ `Dioph.«termD&_» 100
(ParserDescr.binary✝ `andthen (ParserDescr.symbol✝ "D&") (ParserDescr.cat✝ `term 100))