1

This question already has an answer here:

So I have this latex code

\underbrace{
  a^{\frac{1}{n}} \cdot a^{\frac{1}{n}} \cdot \ldots \cdot a^{\frac{1}{n}}
}_{n\text{-times}}} = 
a^{
  \underbrace{
    \frac{1}{n} + \frac{1}{n} + \ldots + \frac{1}{n}
  }_{n\text{-times}}
} =
a^{1} = a

that renders in this formula: enter image description here

but as you can see the second summation in the exponent is rendered too big.

How to typeset it correctly?

marked as duplicate by egreg, Przemysław Scherwentke, Werner, Paul Gessler, Gonzalo Medina Mar 3 '15 at 19:28

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 1
    I believe something very similar has already appeared: \underbrace{\scriptstyle...}_{n\text{ times}} (no hyphen, in my opinion). – egreg Mar 3 '15 at 18:04
  • 2
    Does Heiko's solution to tex.stackexchange.com/questions/155043/… satisfy you? – egreg Mar 3 '15 at 18:07
  • Yes, thank you very much. It does it perfectly. – implicit_knowledge Mar 3 '15 at 18:17
1

So adding \scriptstyle does the trick (thanks to @egreg):

\underbrace{
  a^{\frac{1}{n}} \cdot a^{\frac{1}{n}} \cdot \ldots \cdot a^{\frac{1}{n}}
}_{n\text{-times}}} = 
a^{
  \underbrace{\scriptstyle{
    \frac{1}{n} + \frac{1}{n} + \ldots + \frac{1}{n}}
  }_{n\text{-times}}
} =
a^{1} = a

enter image description here

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