[texhax] Changing spacing between some lines in multline etc

[Lars Madsen]

Victor Ivrii :

> 1) Sometimes I am not happy with some vertical spacing between two
> particular lines in "equations" containing more than two lines (for
> two lines {spreadlines} of mathtools takes care but if there are more
> than two lines it affects all spacing). Is there any regular method
> (except increasing spacing by including phantoms)?
>

\\[length]

> 2) Sometimes I want to use a kind of multline but with all equations
> except the first one flashed right. I cannot invent anything except
> some ugly games with {align}. Is there a better solution?
>

flalign

> 3) sometimes I want to use \sum\int   as a single big operator, so the
> subscript would be strictly below their middle. Is there a way?
>

Wouldn't that confuse the reader? I know it can be done, but currently I 
do not remember the details

> Thank you in advance
>
>              Victor
>
> -- 
> ========================
> Victor Ivrii, Professor, Department of Mathematics, University of Toronto
> http://www.math.toronto.edu/ivrii
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/daleif