Quick question about Interval[]
- To: mathgroup at smc.vnet.net
- Subject: [mg34181] Quick question about Interval[]
- From: Roland Pabel <pabel at tabu.uni-bonn.de>
- Date: Wed, 8 May 2002 01:57:51 -0400 (EDT)
- Organization: RHRZ - University of Bonn (Germany)
- Reply-to: roland at pabel.net
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
I've got a quick question about Intervals : Everything works fine when I use
IntervallIntersection and IntervalUnion. I curiously used the symbols
\[Union] and \[Intersection], but only \[Union] works as expected :
Notebook[{
Cell[BoxData[{
\(\(i = Interval[{3, 7}];\)\), "\[IndentingNewLine]",
\(\(j = Interval[{\(-2\), 5}];\)\)}], "Input"],
Cell[CellGroupData[{
Cell[BoxData[
\(i \[Union] j\)], "Input"],
Cell[BoxData[
\(Interval[{\(-2\), 7}]\)], "Output"]
}, Open ]],
Cell[CellGroupData[{
Cell[BoxData[
\(i \[Intersection] j\)], "Input"],
Cell[BoxData[
\(Interval[]\)], "Output"]
}, Open ]]
},
FrontEndVersion->"4.0 for X",
]
As you can see, the Intersection using \[Intersection] is empty. Is this a
bug or is \[Union] a (unnoted?) feature?
thanks,
Roland
--
ICQ UIN 49339118 Linux Counter #88774
GPG-Key 1024D/C969F3F2 2001-02-28 Roland Pabel <roland at pabel.net>
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