Re: Re: Replacement equivalence?
- To: mathgroup at smc.vnet.net
- Subject: [mg63256] Re: [mg63239] Re: Replacement equivalence?
- From: Pratik Desai <pdesai1 at umbc.edu>
- Date: Tue, 20 Dec 2005 23:35:40 -0500 (EST)
- References: <do6892$b1t$1@smc.vnet.net> <200512200919.EAA28528@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
David Bailey wrote: >carlos at colorado.edu wrote: > > >>This is a spinoff of an ongoing thread in s.m.s. Could the nonlinear >>replacement >> >> b^2 -> 1 >> >>be changed to the linear one >> >> b-> 1||-1 >> >>Similarly >> x^4 -> 16 to x -> 2||-2||2*I||-2*I >> >>Any possible side effects? >> >> >> >Hello, > >Quite a few really, for example: > >b^2 /. b -> 1 || -1 > > (1 || -1)^2 > >David Bailey >http://www.dbaileyconsultancy.co.uk > > > How about something like this Cell[BoxData[ RowBox[{ RowBox[{"b", "^", "4"}], "/.", RowBox[{"b", ":>", RowBox[{"(", RowBox[{"x", "=", RowBox[{ RowBox[{"2", "\[Or]", "x"}], "=", RowBox[{ RowBox[{ RowBox[{"-", "2"}], " ", "\[Or]", "x"}], "=", RowBox[{ RowBox[{ RowBox[{"2", "*", "I"}], "\[Or]", "x"}], "=", RowBox[{ RowBox[{"-", "2"}], "*", "I"}]}]}]}]}], ")"}]}]}]], "Input", CellAutoOverwrite->False] Instead of the regular || is used esc||esc and that did the trick Please refer to 1.10.4 of the mathematica book or just type 1.10.4 in the help browser Hope this helps Pratik -- Pratik Desai ...Moderation, as well as Regularity of Thinking, so much to be wished for in the Heads of those who imagine they come into the World only to watch and govern it?s Motion Gulliver's Travels by Jonathan Swift
- References:
- Re: Replacement equivalence?
- From: David Bailey <dave@Remove_Thisdbailey.co.uk>
- Re: Replacement equivalence?