how can I write multi-line equations that are split inside delimiters? I've tried using two pairs of brackets and masking one bracket in each pair. However this way it is possible that the delimiters have different sizes in each row, and if I change the equation later I may have to change everything manually. Is there a simpler and/or more efficient way to accomplish this?
it is easy to solve with a dummy height, see
http://www.perce.de/LaTeX/math/Mathmode-TeX.pdf , page 44f
Herbert