Math & Science ⇒ How to typeset several "full-size" equations inside one

[deniss]

Hello, and thanks for reading!

I need to typeset a "case" statement of the type "A = { ...", where "..." consists of 2 lines of equations with their respective conditions. If I use the "\begin{array} ... \end{array}" inside the equation environment, my fractions are dwarfed like within the $...$ environment in text, and I want the equations to retain their full size, like within the \[...\] environment or "\begin{equation}...\end{equation}". Anyone know how to accomplish that?

-Denis

[gmedina]

Hi,

you could use the cases environment provided by the amsmath package; it is described in page 8 of the amsmath user guide. For the fractions issue, you can use the \dfrac command.

[deniss]

you could use the cases environment provided by the amsmath package; it is described in page 8 of the amsmath user guide. For the fractions issue, you can use the \dfrac command.

Thank you for the reply. It appears that aligned might do the job, since they say it figures the width for the contents and not to a line width. They don't mention anything about that for cases...

[phi]

For the full-sized fractions use the dcases or dcases* environment from the mathtools package.

[deniss]

Thank you for the suggestion. dcases works great.

aligned does the full-size scaling too, but it's not really for case statements, since the alignment is not to the left bracket but instead about some center point.