Re: Re: List of user-defined derivatives

*To*: mathgroup at smc.vnet.net*Subject*: [mg71682] Re: [mg71608] Re: List of user-defined derivatives*From*: "Chris Chiasson" <chris at chiasson.name>*Date*: Sun, 26 Nov 2006 03:49:18 -0500 (EST)*References*: <200611231041.FAA25261@smc.vnet.net> <ek642v$91p$1@smc.vnet.net>

I guess I guessed incorrectly :-] On 11/25/06, Peter Pein <petsie at dordos.net> wrote: > Chris Chiasson schrieb: > > they're probably stored in the DownValues of Derivative > > > > On 11/23/06, Andrew Moylan <andrew.j.moylan at gmail.com> wrote: > >> Hi all, > >> > >> When the derivative of a function is specified like this: > >> f' = 6 &; > >> or alternatively like this: > >> f'[x_] = 6; > >> the definitions are not stored in UpValues[f] or DownValues[f]. I > >> understand this is why Clear[f] doesn't clear definitions for > >> derivatives. My question is: where are these definitions stored, and > >> how can one obtain a list of user-defined derivatives such as this one? > >> > >> Cheers, > >> Andrew > >> > >> > > > > > They are in SubValues[Derivative] in the form > HoldPattern[Derivative[1][f][x_]] :> 6 > > P² > > -- http://chris.chiasson.name/

**References**:**List of user-defined derivatives***From:*"Andrew Moylan" <andrew.j.moylan@gmail.com>