Re: List of user-defined derivatives

*To*: mathgroup at smc.vnet.net*Subject*: [mg71608] Re: List of user-defined derivatives*From*: Peter Pein <petsie at dordos.net>*Date*: Sat, 25 Nov 2006 05:36:45 -0500 (EST)*References*: <200611231041.FAA25261@smc.vnet.net> <ek642v$91p$1@smc.vnet.net>

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

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