On Sun, Mar 18, 2012 at 10:57 PM, Alan Bromborsky <[email protected]>wrote:
> If a1 is commutative and e1 and e2 are not then
>
> (a1*e1*e2).args_cnc() = [[a1], [e1, e2]]
>
> and
>
> (a1*e1*e1).args_cnc() = [[a1], [e1**2]]
>
> is there anyway to make
>
> (a1*e1*e1).args_cnc() = [[a1], [e1,e1]]
>
> or in general to convert
>
> e1**r to [e1,e1,...,e1] r-times
>
>
No general function that I know of but
>>> c,nc=(x*A**2*(A*B)**2*B**-3).args_cnc()
>>> newnc = []
>>> newnc=[]
>>> for i in nc:
... b, e = i.as_base_exp()
... if e.is_Integer:
... if e < 0:
... newnc.extend([b**-1]*abs(e))
... else:
... newnc.extend([b]*e)
... else:
... newnc.append(i)
...
>>> newnc
[A, A, A*B, A*B, B**(-1), B**(-1), B**(-1)]
>>> nc
[A**2, (A*B)**2, B**(-3)]
/c
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