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List of forum topicsenRe: clearing a variable with a dummy subscript
http://mathforum.org/kb/thread.jspa?messageID=7826114&tstart=0#7826114
a workaround could be to delete just the entries of DownValues which contain the symbol u.

To demonstrate I add to your]]>May 21, 2012 5:59:07 AMMay 21, 2012 5:59:07 AMchristoph.lhotka@fundp.ac.be0Re: clearing a variable with a dummy subscript
http://mathforum.org/kb/thread.jspa?messageID=7826118&tstart=0#7826118
]]>May 21, 2012 5:59:06 AMMay 21, 2012 5:59:06 AM1Re: clearing a variable with a dummy subscript
http://mathforum.org/kb/thread.jspa?messageID=7825672&tstart=0#7825672
> Hi ! > Here is something very simple I don't understand : > > f[x_] := x;]]>May 20, 2012 2:34:56 AMMay 20, 2012 2:34:56 AMphbrf@t-online.de0Re: clearing a variable with a dummy subscript
http://mathforum.org/kb/thread.jspa?messageID=7825315&tstart=0#7825315
>Hi ! Here is something very simple I don't understand]]>May 19, 2012 5:47:06 AMMay 19, 2012 5:47:06 AMreadnews@sbcglobal.net0Re: clearing a variable with a dummy subscript
http://mathforum.org/kb/thread.jspa?messageID=7825326&tstart=0#7825326
> Hi ! > Here is something very simple I don't understand]]>May 19, 2012 5:44:02 AMMay 19, 2012 5:44:02 AMawnl@gmx-topmail.de0clearing a variable with a dummy subscript
http://mathforum.org/kb/thread.jspa?messageID=7824932&tstart=0#7824932
Hi ! Here is something very simple I don't understand :