I've noticed that the exported function *degree* in *DeRhamComplex* doesn't
work (probably never did):
degree : % -> I
++ degree(p) returns the homogeneous degree of p.
(line 340 in derham.spad)
e.g.
(11) -> degree(dx)
Internal Error
The function degree with signature hashcode is missing from domain
DeRhamComplex(Integer)(x y z)
The function should be inherited from ExtAlgBasis/AntiSymm, consequently it
should read:
degree : % -> NNI
This could easily be fixed in the next release.
Furthermore, neither of the examples (in *the* *book, help*) to
*CliffordAlgebra
*work anymore. One has to omit *quadraticForm *in the consturctors.
Finally, what's your opinion to the following matter?
Extending DeRhamComplex with some functions like scalar product and Hodge
dual with respect to some metric g, what would be preferable: to include a
(set-able) default g into the domain or to give it as a parameter?
For instance, in the first case one had to write
setMetric([...]), dot(a,b), hodgeStar(a)
or othewise
dot(g,a,b), hodgeStar(g,a) ?
Kurt
> If there is some code you want included in new release
> please speak up.
>
> --
> Waldek Hebisch
> [email protected] <javascript:>
>
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