Matthew Low schrieb:

>>- align: when inserting an align-environment, LyX creates the align-
>>  environment with the default 2 columns. That's fine.
>>  Now I can add 2 more columns, so that I can put two formulas aside
>>  with variable space in between (one main reason for using align).
>>  Also fine.
>>  But LyX does in no way show this variable space on screen, so I
>>  experience this not very 'wysiwyg', but a little confusing.
> 
> For variable space between columns, you'll want to use the alignat 
> environment.


Thank you, Matt and Uwe,

as far as I can see in the ams-doc, Table 3.1:
  .../tetex/doc/latex/amsmath/amsldoc.dvi
or in Uwe's helful paper, 18.2.1 and 18.2.2:
http://wiki.lyx.org/uploads/LyX/LyXMathebefehle/LyXMathebefehle.pdf

the align-environment is the right one for the following layout:
  \hfill {x1=y1} \hfill {x2=y2} \hfill

and the alignat-environment is the right one for a layout like:
  \hfill {x1=y1} \hspace{3cm} {x2=y2} \hfill

Kind regards -
bernhard

-- 
http://www.mb-schiekel.de/
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