That's why we have these brackets here instead of parentheses. Then there will be an absolute maximum value for f and an absolute minimum value for f. So that means there exists, this is a symbol for the logical symbol for there exists, there exists an absolute maximum value of f over interval and absolute minimum value of f over the interval. So let's think about that a little bit and this probably is pretty intuitive for you. You're probably saying, well, why do they even have to write a theorem here? And why do we even have to have this continuity there? And we'll see in a second why the continuity actually matters. So this is my x-axis.