✐‹creator "Kevin Kappelmann"› section ‹HOL Syntax Bundles› subsection ‹Basic Syntax› theory HOL_Syntax_Bundles_Base imports HOL_Basics_Base begin bundle HOL_ascii_syntax begin notation (ASCII) Not (‹~ _› [40] 40) and conj (infixr ‹&› 35) and disj (infixr ‹|› 30) and implies (infixr ‹-->› 25) and not_equal (infixl ‹~=› 50) syntax "_Let" :: "[letbinds, 'a] ⇒ 'a" (‹(let (_)/ in (_))› 10) end end