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New notation

• Subject: [mg2178] New notation
• From: jacho at mimuw.edu.pl (Jan Gorski)
• Date: Thu, 12 Oct 1995 05:58:55 GMT
• Approved: usenet@wri.com
• Distribution: local
• Newsgroups: wri.mathgroup
• Organization: Division of Mathematics, Informatics and Mechanics, Warsaw University
• Sender: daemon at wri.com ( )

I want to use new notation for derivatives like this:

f,,x = D[f,x]  

How can I do it?