How would I create something like either of the following on LaTeX?
\overbrace{1 + 1 + \dots + 1}^n
\underbrace{1 + 1 + \dots + 1}_n
\overbrace{1 + 1 + \dots + 1}^nand\underbrace{1 + 1 + \dots + 1}_n, respectively. – Bernard Aug 10 '14 at 14:13