On Tue, 23 Oct 2001, U-E59264-Osman F Buyukisik wrote:
> V.V.Pipin writes:
> > Hi everybody,
> >
> > I posted the message yesterday about subj but have no replay probably due
> > to the wrong topic there.
> >
> > If anybody uses itensor.lisp in maxima,
> > Could you please tell me what is a result applying
> > this
>
> Loading ./itensor.lisp
> Finished loading ./itensor.lisp
> (D1) ./itensor.lisp
> (C2) dim:3;
>
> (D2) 3
> (C3) declare(e,constant);
>
> (D3) DONE
> (C4) metric:g;
>
> (D4) g
> (C5) components(g([p,q],[]),e([p,q],[])*P([],[]));
>
> (D5) DONE
> (C6) components(g([],[p,q]),e([],[p,q])/P([],[]));
>
> (D6) DONE
> (C7) show(g([i,j],[]))$
>
> (D7) g
> $i|/$j|
> (C8)
>
> I think itsenor is working correctly. maybe thats why it is not
> "installed."
>
>
> Osman
>
Hi ,
could you please look at my message more carefully. With my maxima I
obtained just the same as you got. But this mean that "itensor" does not
work in correct way.
What I said in previous message is that the result of
final command
show(g([i,j],[])$
should be
P*e
i j
as written in the manual(note the index representaion here also).
Acctually this test show that function - componets() does not work .
Otherwise the components of metric were be substituted in accordance with
definition by tensor e.
Best regards, Valerij