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Re: boundary conditions

On Mon, 19 Sep 2011 12:11:15 +0100, Peter Pein <petsie at> wrote:

> Am 18.09.2011 14:20, schrieb goli:
>> what is the difference between these boundary conditions? do they
>> represent the same thing?
>> Derivative[0,1]v[t,0]==0
>> v(0,1)[t,0]==0
> Hi,
> you did not try to enter the two lines above, did you?
> The first one would make sense if it would read
> Derivative[0,1][v][t,0]==0
> I guess you know about the meaning, because you're asking for BCs.
> But I can't imagine how
> v(0,1)[t,0]==0
> should make sense without an extension of Mathematica's parser.
> Peter

Apart from the fact that neither of these has been typed in correctly, if  
one interpolates the likely meaning, then yes, they represent the same  
thing: the first is in InputForm (or FullForm) while the second is in  
StandardForm. The underlying expressions are identical.

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