Large delimiters, multiline equations

[Paul A. Rubin]

On 1/22/21 3:24 PM, Joel Kulesza wrote:
>
>
> On Fri, Jan 22, 2021 at 12:09 Paul A. Rubin <parubin73 at gmail.com 
> <mailto:parubin73 at gmail.com>> wrote:
>
>     On 1/22/21 1:06 PM, Neal Becker wrote:
>     > On Fri, Jan 22, 2021 at 11:26 AM Joel Kulesza
>     <jkulesza at gmail.com <mailto:jkulesza at gmail.com>> wrote:
>     >> On Fri, Jan 22, 2021 at 6:29 AM Neal Becker
>     <ndbecker2 at gmail.com <mailto:ndbecker2 at gmail.com>> wrote:
>     >>> I have an equation that has to be split (to fit into beamer
>     >>> presentation).  It has large delimiters that span the lines. 
>     Does lyx
>     >>> have any facility to help with this?  I did get a useable
>     result, but
>     >>> only with a lot of ERT.  Lyx seems not helpful here, is there
>     any way
>     >>> other than ERT to get "\Biggl. ... \Biggr]"? Or "\right."?
>     >>>
>     >>> Here is what I wanted:
>     >>>
>     >>> \begin{multline*}
>     >>>
>     >>> \mathbf{X}_{N_{C}\times S\times
>     >>>
>     A}=\left[\left[\left[\sum_{n}m1_{p+cL_{c}+nS}m2_{p+cL_{c}+(n+\tau)S}^{*}\right.\right.\right.,\\
>     >>>
>     >>> \Biggl.\Biggl.\Biggl.\tau\in[-A/2\dots A/2]\Biggr],p\in[0\dots
>     >>> S-1]\Biggr],c\in[0\dots N_{c}-1]\Biggr]
>     >>>
>     >>> \end{multline*}
>     >>
>     >> To accomplish this, I prefer to use the Insert Delimiters
>     capability (the subject of an adjacent thread). Using "none" will
>     let you give the appearance of matched delimiters that vertically
>     scale to contain the contents. The "Swap & Reverse" button is
>     meant as a convenience to control delimiter insertion in this
>     manner.  Finally, if you have lines that vary in vertical extent,
>     a vertical phantom (\vphantom) with the proper contents will
>     ensure consistent delimiter sizes.
>     >>
>     >> Hope this helps,
>     >> Joel
>     > Thanks for the reply.  I can't see how to do this. Inserting
>     > Delimiters seems to insist on inserting a pair of delimiters - I
>     don't
>     > see any way to just get \left[ for example.
>     I've attached three screenshots. The first (shot1.png) shows LyX open
>     with a new document, containing two copies of your example. The first
>     copy is pasted into an ERT box (so that I can see what you are
>     shooting
>     for). The second has most of your example, but not the nested
>     brackets,
>     typed into a multiline math environment. The first line of the
>     multiline
>     formula is selected, so that I can put a left bracket in front of it.
>
>     The second screenshot shows the delimiter insertion dialog. Note
>     that I
>     unchecked the "keep matched" box below the left pane, then selected a
>     left bracket in the left pane and "(None)" in the right pane.
>
>     The third screenshot shows the formula after I click "Insert" in the
>     delimiter dialog. There is a large left bracket at the start of the
>     first line and "phantom" bracked (dotted line) at the end of the
>     first
>     line. To insert other brackets, do similar things, selecting the
>     content
>     of the bracketed area and where appropriate selecting none on the
>     left
>     and a closing bracket on the right.
>
>
> Paul,
>
> Thanks for picking up the thread!  If you provide the LyX file for 
> shot3, I’ll demonstrate what I meant about vphantom.
>
> Thanks again,
> Joel
Joel,

Happy to help on the thread. Here's the file for shot 3.

Paul

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lyx.org/pipermail/lyx-users/attachments/20210122/ab82b15c/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: brackets.lyx
Type: application/x-lyx
Size: 2844 bytes
Desc: not available
URL: <http://lists.lyx.org/pipermail/lyx-users/attachments/20210122/ab82b15c/attachment.lyx>