Re: Defining a custom Leibnitz operator in Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg92364] Re: Defining a custom Leibnitz operator in Mathematica*From*: GidiL <gidienator at gmail.com>*Date*: Mon, 29 Sep 2008 07:07:07 -0400 (EDT)*References*: <gbmphp$htu$1@smc.vnet.net> <gbnpgt$ps8$1@smc.vnet.net>

On Sep 28, 2:24 pm, Jean-Marc Gulliet <jeanmarc.gull... at gmail.com> wrote: > GidiL wrote: > > Dear All! > > > I would appreciate any input on the following problem. > > > I would like to define a custom differential operator with the > > following properties: > > > 1. it would be denoted with a customized symbol that I would create > > (e.g. the Greek letter \delta, or any combination, such as \bar > > {\delta}); > > > 2. it would possess the Leibnitz property of differentiation; > > > 3. it would be possible to define its action a priori on certain > > elements (e.g. \delta of a constant would be zero, etc.). > > > Any help would be greatly appreciated. > > > Thanks, > > > Gideon > > Hi Gideon, > > The following tutorial, "An Example: Defining Your Own Integration > Function," available online and at > > http://reference.wolfram.com/mathematica/tutorial/AnExampleDefiningYo... > > should tell you all, assuming your are comfortable enough with pattern > matching. If more info are needed, see "Patterns" either online or at > > http://reference.wolfram.com/mathematica/tutorial/PatternsOverview.html > > Regards, > -- Jean-Marc- Hide quoted text - > > - Show quoted text - Thank you very much for this information. It is indeed very useful.