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The Del operator

• To: mathgroup at smc.vnet.net
• Subject: [mg24704] The Del operator
• From: Jack Goldberg <jackgold at math.lsa.umich.edu>
• Date: Fri, 4 Aug 2000 01:19:28 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Hi, 

If you input  Del[x] you get as output  "inverted-delta"[x].
I would like to incorporate a similar feature in a package I 
am writing,  to wit,

The output of  Chi[x,a,b]  should be  "Greek-lowercase chi"[x,a,b].

This must be very easy but I have not found reading these sections in 
the Book very helpful.  Thanks  ..

jack