1

It seems as though the SIAM class does not play nice with the cases environment. For example

$$
\begin{cases}
x & y
\end{cases}
$$

will produce the error

misplaced alignment tab character

Oddly enough,

$$
\begin{cases}
x \\ y
\end{cases}
$$

compiles, but puts x and y on the same line.

2
  • 2
    cases environment is defined in amsmath so you presumably want \usepackage{amsmath} otherwise you get the original (more or less undocumented) \cases command that is defined in latex but really comes from plain tex and should not be used Jan 10, 2014 at 0:05
  • Thanks. If you put your answer here I can accept it thereby closing the question.
    – user31162
    Jan 10, 2014 at 0:13

1 Answer 1

2

The cases environment is defined in amsmath so you presumably want

\usepackage{amsmath}

otherwise you get the original (more or less undocumented) \cases command that is defined in latex but really comes from plain tex and should not be used.

2
  • you might also have suggested using \[ ... \] instead of $$ ... $$. Jan 10, 2014 at 14:39
  • @barbarabeeton I thought about it, but one thing at a time:-) Jan 10, 2014 at 14:42

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