| 1 | initial version |
In SageMath 9.0:
sage: A.<x,y> = InfinitePolynomialRing(QQ)
sage: g=x[0]+x[1]+y[0]
sage: g.variables()
(x_1, x_0, y_0)
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.