# Fraction Brackets size

I wanted to write the following equation but somehow my first bracket before the fraction is shorter, last one is fine. but I have no clue what happened to the first one,

also is it possible to write the stuffs under sup as two separate lines, rather than in one line?

\begin{aligned} \Lambda \left( \phi \right) \coloneqq \adjustlimits\sup_{x,y \in E, x \neq y} \left({\dfrac{ d \left( \phi \left(x\right) , \phi \left(y\right) \right) } {d \left(x, y \right)} } \right) \end{aligned}


• Welcome to TeX.SX! You shouldn't use \adjustlimits in this case; no blank lines inside aligned either. – egreg Apr 26 '15 at 17:48
• but then how shall I write under supremum??, actually that is why I used adjust limits....sorry to ask again – Shaikh Tanvir Hossain Apr 26 '15 at 17:49
• Try without it! For the two lines, write \sup_{\substack{x,y\in E\\ x\neq y}} – egreg Apr 26 '15 at 17:50

The \adjustlimits macro of mathtools is used for getting vertically aligned limits when two operators taking limits follow one another. In this case it's exactly the reason why \left( doesn't do what it's supposed to.

When in a display, \sup behaves exactly like \lim, so there's no special thing to do.

\documentclass{article}
\usepackage{mathtools}

\begin{document}

$$\Lambda(\phi) \coloneqq \sup_{\substack{x,y \in E\\ x \neq y}} \left( \dfrac{d(\phi(x), \phi(y))}{d(x, y)}\right)$$

\end{document}


Note that \left and \right are necessary only around the fraction (but in this case I'd omit those parentheses altogether).

Also aligned is not necessary.

• Thanks sorry I made a stupid mistake again, but finally worked – Shaikh Tanvir Hossain Apr 26 '15 at 18:00
• @ShaikhTanvirHossain Put \DeclareMathOperator*{\argmax}{arg\,max} in the document preamble and use \argmax in the document. – egreg Apr 27 '15 at 9:40
• Ah! ok...Thanks man, many thanks...I was deleting my question, thought you might not check again......really appreciate this – Shaikh Tanvir Hossain Apr 27 '15 at 9:41
• so my question was ...(sorry I deleted it) !!Sorry @egreg I got another similar problem, couldn't solve, rather than \sup now I have \arg\max, problem is now stuff below is coming under max, can I make it in center?? – – Shaikh Tanvir Hossain Apr 27 '15 at 9:42