Issue 11167 - Lack of union/intersection with limits.
Summary: Lack of union/intersection with limits.
Alias: None
Product: Math
Classification: Application
Component: ui (show other issues)
Version: OOo 1.0.1
Hardware: PC Windows 2000
: P3 Trivial with 5 votes (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
: 78811 87585 94294 (view as issue list)
Depends on:
Reported: 2003-02-03 19:22 UTC by danyey
Modified: 2013-02-07 22:34 UTC (History)
5 users (show)

See Also:
Latest Confirmation in: ---
Developer Difficulty: ---

Example of set operator with limits. (840 bytes, image/png)
2003-06-19 00:39 UTC, danyey
no flags Details
nary operators (13.38 KB, image/png)
2009-03-11 12:39 UTC, garyuu
no flags Details

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Description danyey 2003-02-03 19:22:31 UTC
It would be useful to have union/intersection (the set operators) with limits, 
as in, so they can be used like sigma/pi/integral notation. I discovered this 
trying to enter the formula for a relation's transitive closure.
Comment 1 michael.ruess 2003-06-13 15:35:24 UTC
I have never heard about set operators with limits...
please attach a screenshot or scan of that, what you mean. This would
help us very much! Thank you.
Feel free to reopen the issue, when you have done so.
Comment 2 danyey 2003-06-19 00:39:19 UTC
Created attachment 6982 [details]
Example of set operator with limits.
Comment 3 danyey 2003-06-19 00:54:06 UTC
I discovered somewhere (I can't find it right now) that you can set 
oper%union from a to b
which is how I made the screenshot. However, it would be nice if it 
was built in, since it appears I have to set it up for each new file.
Comment 4 michael.ruess 2003-06-19 10:04:17 UTC
MRU->BH: In Math in is possible to create a user defined operation as
"oper %user_defined_symbol {x}" e.g. (also possible with limits).
This is only described somewhere deep in the Help. It would be better,
to have it also as a button in the selection window.
Comment 5 Unknown 2003-12-02 19:29:22 UTC
I am a computer science student, and I use union/intersect
operators with limits 
quite frequently, especially in math
It would be very nice if these 
operators could be made
available in the formula editor, with a button in 
selection window (just like the sigma symbol for sums,

The wish is valid 
for the Linux version 1.1.0 of
OpenOffice.Org, too.
Comment 6 thomas.lange 2006-09-25 11:29:47 UTC
Comment 7 Regina Henschel 2007-06-22 19:32:52 UTC
*** Issue 78811 has been marked as a duplicate of this issue. ***
Comment 8 Regina Henschel 2008-03-29 16:02:51 UTC
*** Issue 87585 has been marked as a duplicate of this issue. ***
Comment 9 thomasowens 2008-03-29 17:09:03 UTC
I think part of the problem is that it is too difficult to add a new symbol to
the list of symbols. I don't want to remove or replace an existing one, just add
a new one that might not have been put there by default.
Comment 10 michael.ruess 2008-09-25 11:01:14 UTC
*** Issue 94294 has been marked as a duplicate of this issue. ***
Comment 11 skelem 2008-10-23 23:56:09 UTC
Rather than have a fixed set of symbols, why not have a form/template that gives
the form of summation, but allows you to specify the from, to, body, AND the
symbol? In TeX notation, each of these is a box, and you can put whatever you
want inside each box, rather than restrict the form to the ones we think are
most useful right now.
Comment 12 garyuu 2009-03-11 12:39:29 UTC
Created attachment 60882 [details]
nary operators
Comment 13 garyuu 2009-03-11 12:50:14 UTC

The symbol for 'disjoint union' or super union or bigcup whatever you wish to
call it is an important symbol and the lack of it is holding back adoption of
OpenOffice at university level.

As an example, I am a 3rd year undergraduate and have several years notes all
typed in OpenOffice (my favourite word processor). I am now studying
combinatorics and the lack of convenient (menu/pallete) availability makes for
difficult note taking for this module.

The competition CrudOffice added this symbol and a host of other 'n-ary' symbols
(to use their phrase) to the 2007 version.
(see attachment naryOperators__200903cropped.png above)

Some graduates turn out to be future business leaders, so if they end up using
CrudOffice because you are missing a symbol, then you have lost a future
corporate buyer - it matters.

The only action that seems to be happening recently is 'marked as duplicate'
which ignores the issue in some ways - the fact that new bug reports are being
opened indicates demand and might hopefully result in this bug 11167 being moved
up the priority list soon.

As this request was submitted several years ago, I hope that OpenOffice can add
this symbol soon. Giving the competition a two year head start is probably too
long already.
Comment 14 Regina Henschel 2011-01-03 14:00:16 UTC
Similar request in issue 7664.