> sage: (a^3)^(1/3)
> 5*(meter^3)^(1/3)
>
> does not produce the expected units of "meter".  Is there a means to
> force further simplification?

You could try

sage: m = units.length.meter
sage: assume(m > 0)
sage: (5*m)^3
125*meter^3
sage: ((5*m)^3)^(1/3)
5*(meter^3)^(1/3)
sage: simplify(((5*m)^3)^(1/3))
5*meter



Doug, who likes his Yankee friends but insists that 'meter' is a
device which measures ;-)

--
Department of Earth Sciences
University of Hong Kong

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