|   | 1 |  initial version  | 
You can do conversion:
R(g)
or
g = R(g)
However it is often better to avoid the symbolic ring altogether, if possible.
 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.