Curly brackets mean exactly the same as ordinary parentheses in this context (in a few contexts (, [ and { can all be defined to take a special meaning, but ordinarily they are all different ways of typesetting). Cauchy\'s inequality is of the form Solution Curly brackets mean exactly the same as ordinary parentheses in this context (in a few contexts (, [ and { can all be defined to take a special meaning, but ordinarily they are all different ways of typesetting). Cauchy\'s inequality is of the form.