notation > "s ^ (-1)" non associative with precedence 75 for @{ 'invert $s }.
notation < "s \sup (-1) x" non associative with precedence 90 for @{ 'invert_appl $s $x}.
notation > "s ^ (-1)" non associative with precedence 75 for @{ 'invert $s }.
notation < "s \sup (-1) x" non associative with precedence 90 for @{ 'invert_appl $s $x}.