|   | 1 |  initial version  | 
After the commands you gave, you can "rename" the generators:
sage: e12
PBW[alpha[2]]
sage: e12.rename('e12')
sage: e12
e12
|   | 2 |  No.2 Revision  | 
After the commands you gave, you can "rename" the generators:
sage: e12
PBW[alpha[2]]
sage: e12.rename('e12')
sage: e12
e12
I don't know of an automated procedure, but maybe you could modify pbw_basis (and hence PoincareBirkhoffWittBasis) to take an extra argument to give names to the generators.
 Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
 
                
                Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.