Hi,
In LO Math is it possible to define a matrix with cells spanning multiple rows or columns, for example:
a -b wide- c
1 2 3 4
so “b wide” would span columns 2-3 .
Thanks
In the Math Guide:
Thanks for the update 
I used a PDF guide I found online called “Math Objects” v.1 but it’s from 2004.
As I wrote no mention in there about nested matrices. Probably a lot a changed since.
Insert a nested matrix inside your “outer” one:
matrix { a # b # c ## 1 # matrix { 2 # 3 } # 4 }
This a quick’n’dirty answer. You need to “polish” it with separators or other “decorations” to make it readable and understandable at first sight.
Thanks. I thought LO Math didn’t support nested matrix constructs. Is this a new feature>
Not at all. Everywhere an “element” is expected, you can enter any construct, as much complicated as you like. If necessary, enclose it in { } to clearly delimit its extent.
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