<<< native [ EMathOperator "there exists" , EGrouped [ EGrouped [ EIdentifier "\948" , ESymbol Rel ">" , ENumber "0" ] , EMathOperator "such that" , EGrouped [ EGrouped [ EIdentifier "f" , ESymbol Ord "\8289" , EDelimited "(" ")" [ Right (EIdentifier "x") ] ] , ESymbol Rel "<" , ENumber "1" ] ] ] >>> mml there exists δ > 0 such that f ( x ) < 1