for instance, is this good enough
class MatrixFunction(MatSymbol):
def call(self, arg):
return MatrixEvaluatedFunction(self, arg)
class MatrixEvaluatedFunction(MatExpr):
like symbol but with an additional argument
On 1 November 2012 18:50, Stefan Krastanov <[email protected]> wrote:
> For me it will only be a tree node. I would like to have rules like:
>
> Trace( product of three DiracMatrixFunction ) -> 0
> DiracMatrixFunction(x)*DiracMatrixFunction(y) -> Kronecker(x,y)*Identity
>
> On 1 November 2012 18:47, Matthew Rocklin <[email protected]> wrote:
>> We do not have a MatrixFunction in MatrixExprs but it would be relatively
>> simple to make one. What sort of logic would you want it to support?
>>
>>
>> On Thu, Nov 1, 2012 at 12:42 PM, Stefan Krastanov
>> <[email protected]> wrote:
>>>
>>> Is there a way to represent something like M(x) where x is a Symbol
>>> and M(x) is something matrix-like.
>>>
>>> Maybe a MatrixSymbol with a second argument (i.e. M(x) is
>>> MatrixSymbol('M', 'x'))?
>>>
>>> Or something mimicking the Function classes in the core. But I hate
>>> all the magic with the metaclasses. It seems excessively complicated.
>>>
>>> I need this in order to work out some algorithms for simplification of
>>> Dirac algebra (gamma matrices) expressions. I was thinking about using
>>> the new rewrite rules module.
>>>
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