Hi,

I need advice from algebraic fields experts. Currently,

sage: RR(-1)^(1/3) 
0.500000000000000 + 0.866025403784439*I 
sage: CC(-1)^(1/3) 
0.500000000000000 + 0.866025403784439*I 
sage: QQbar(-1)^(1/3) 
0.500000000000000? + 0.866025403784439?*I 
sage: AA(-1)^(1/3)                             # inconsistent 
-1

The behavior of AA(-1)^(1/3) is inconsistent. Is this intentional? Should 
we change the behavior?

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