How to put line break in a math

I'd like to express the following sentence (source_location is also italic, it's not correctly rendered):

Each entry has a list of tuple: < source_location, R/W, trip_counter, occurrence, killed (explained in the later) >

My current workaround for this is:

$ \left\langle
\textit{source\_location}, \textit{R/W}, \textit{trip\_counter},
\textit{occurrence}, \textit{killed} \text{(explained in the later)}
\right\rangle $

I'm using 2-column paper. This < .. > is too long, but no line break because it is a math. How do I autom开发者_如何学Goatically (or manually) put line break in such case? It seems that \left\langle and \right\rangle should be in a single math. So, hard to break into multiple maths.

$<$ and $>$ would be an alternative, but I don't like it.

LaTeX does allow inline maths to break over lines by default, but there are a number of restrictions. Specifically, in your case, using \left...\right puts everything inside a non-breakable math group, so the first step is to replace them with either just plain \langle...\rangle or perhaps \bigl\langle...\bigr\rangle.

However, this still isn't enough to permit linebreaking; usually that's still only allowed after relations or operators, not punctuation such as the comma. (I think this is what's going on anyway; I haven't stopped to look this up.) So you want indicate where allowable line breaks may occur by writing \linebreak[1] after each comma.

Depending how often you have to do this, it may be preferable to write a command to wrap your "tuples" into a nice command. In order to write this in your source:

$ \mytuple{ source\_location, R/W, trip\_counter, occurrence,
    killed\upshape (explained in the later) } $

here's a definition of \mytuple that takes all of the above into account:

\makeatletter
\newcommand\mytuple[1]{%
  \@tempcnta=0
  \bigl\langle
  \@for\@ii:=#1\do{%
    \@insertbreakingcomma
    \textit{\@ii}
  }%
  \bigr\rangle
}
\def\@insertbreakingcomma{%
  \ifnum \@tempcnta = 0 \else\,,\ \linebreak[1] \fi
  \advance\@tempcnta\@ne
}
\makeatother

Why not define a new command:

\newcommand{\tuple}[5]{$\langle$\textit{#1}, \textit{#2}, \textit{#3}, \textit{#4},
   \textit{#5} (explained in the latter)$\rangle$}

Then use \tuple{sourcelocation}{R/W}{tripcounter}{occurrence}{killed}

There seems to be a package that addresses that problem, called breqn. You can try this and let us know (I haven't used that).

I'd use the align* environment from AMSmath. Furthermore you could just add "\" to break the lines? Should work in math environments, too. Alternatively you could separate the equations.

Use \linebreak inside the math expression wherever you want a new line even between 2 brackets. This will enforce the line to be broken.