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Re: clearing a variable with a dummy subscript


Use Unset.

Subscript[u, k_] =. 


David Park
djmpark at comcast.net 
http://home.comcast.net/~djmpark/index.html 



From: Andre Hautot [mailto:ahautot at ulg.ac.be] 


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





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