2

I have the following 

\[K^{-1}\left\|\sum\limits_{n=1}^N a_ny_n\right\|
   \leq \left\|\sum\limits_{n=1}^N a_nx_n\right\|
   \leq K\left\|\sum\limits_{n=1}^N a_ny_n\right\| (\dagger)\]

But the dagger doesn't appear at the right hand end of the page. How can I Get it so that it does appear on the end of the page? the \hfill command doesn't seem to work. Thank you.

Tom
  • 23
  • 2
    Welcome to TeX.SX! You can have a look at our starter guide to familiarize yourself further with our format. You are probably looking for \tag{$\dagger$} inside the environment equation with package amsmath loaded. – Paul Gessler Apr 20 '15 at 01:20
  • But note that the tag goes on the same side as the equation number. – JPi Apr 20 '15 at 01:43

2 Answers2

3

I suggest you use the tag macro, which is provided by the amsmath package, to place the dagger symbol. I further suggest you create a dedicated LaTeX macro -- e.g., with the help of the mathtools package -- named \norm. This will make your code more readable.

enter image description here

\documentclass{article}
\usepackage{mathtools}  % loads 'amsmath' package automatically
\DeclarePairedDelimiter{\norm}{\lVert}{\rVert}
\begin{document}
\[
     K^{-1}\norm[\bigg]{\sum_{n=1}^N a_ny_n}
     \leq  \norm[\bigg]{\sum_{n=1}^N a_nx_n}
     \leq K\norm[\bigg]{\sum_{n=1}^N a_ny_n}
  \tag{$\dagger$}
\]
\end{document}
Mico
  • 506,678
1

This should give the required result: 

\documentclass{article}  
\usepackage{amsmath}  
\begin{document}  
\[K^{-1}\left\|\sum\limits_{n=1}^N a_ny_n\right\|  
   \leq \left\|\sum\limits_{n=1}^N a_nx_n\right\|  
   \leq K\left\|\sum\limits_{n=1}^N a_ny_n\right\| \eqno{(\dagger)}\]  
\end{document}

Ronny
  • 6,110
Ambika Vanchinathan
  • 2,975