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clearing a variable with a dummy subscript

• To: mathgroup at smc.vnet.net
• Subject: [mg126545] clearing a variable with a dummy subscript
• From: Andre Hautot <ahautot at ulg.ac.be>
• Date: Fri, 18 May 2012 05:25:47 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com

Hi !
Here is something very simple I don't understand :

f[x_] := x; f[2]    (*A function*)
 2

Clear[f]; f[2]       (*The same perfectly cleared as expected*)
f[2]


Subscript[u, k_] := k; Subscript[u, 2]        (*u with subscript k_ 
entered via the palette*)
 2

Clear[u]; Subscript[u, 2]          (*I found no way to clear u; a 
suggestion ?)
2

Thanks in advance,

ahautot

• Follow-Ups:
  • Re: clearing a variable with a dummy subscript
    • From: Bob Hanlon <hanlonr357@gmail.com>