Re: Deleting subscripted functions with arguments.
- To: mathgroup@smc.vnet.net
- Subject: [mg11006] Re: Deleting subscripted functions with arguments.
- From: Paul Abbott <paul@physics.uwa.edu.au>
- Date: Mon, 16 Feb 1998 18:15:15 -0500
- Organization: University of Western Australia
- References: <6c659j$6b3@smc.vnet.net>
Alvin Larson wrote: > While using Mathematica v3.0 on Windows 95, I am unable to delete a > function that I have defined with a subscript. I have defined A_n[x_] > := 2 x, where _n is subscript n or [ctl]_n. Using Clear[A_n] or A_n =. > does not work. A copy of the session is shown below. Any suggestions? The rules are associated with Subscript rather than with A. Try ?Subscript and you will see this. You can either use Unset, i.e., \!\(A\_n[x_]\ =.\) or use Clear[Subscript] (but this clears _all_ rules associated with Subscript). I've appended a Notebook below. Cheers, Paul ____________________________________________________________________ Paul Abbott Phone: +61-8-9380-2734 Department of Physics Fax: +61-8-9380-1014 The University of Western Australia Nedlands WA 6907 mailto:paul@physics.uwa.edu.au AUSTRALIA http://www.pd.uwa.edu.au/~paul God IS a weakly left-handed dice player ____________________________________________________________________ Notebook[{ Cell[BoxData[ \(A\_n[x_]\ := \ 2\ x\)], "Input"], Cell[CellGroupData[{ Cell[BoxData[ \(A\_n[y]\)], "Input"], Cell[BoxData[ \(2\ y\)], "Output"] }, Open ]], Cell[BoxData[ \(A\_n[x_]\ =. \)], "Input"], Cell[CellGroupData[{ Cell[BoxData[ \(A\_n[y]\)], "Input"], Cell[BoxData[ \(A\_n[y]\)], "Output"] }, Open ]], Cell[BoxData[ \(A\_n[x_]\ := \ 2\ x\)], "Input"], Cell[CellGroupData[{ Cell[BoxData[ \(A\_n[y]\)], "Input"], Cell[BoxData[ \(2\ y\)], "Output"] }, Open ]], Cell[BoxData[ \(Clear[Subscript]\)], "Input"], Cell[CellGroupData[{ Cell[BoxData[ \(A\_n[y]\)], "Input"], Cell[BoxData[ \(A\_n[y]\)], "Output"] }, Open ]] } ]