Opened 7 years ago

#18500 new defect

coercion of Laurent series to SR

Reported by: rws Owned by:
Priority: major Milestone: sage-6.8
Component: symbolics Keywords:
Cc: Merged in:
Authors: Reviewers:
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

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#16203 deals with conversion from Expression.series to PowerSeries but this should work too:

sage: R.<x> = LaurentSeriesRing(QQ)
sage: (1/(1-y)).series(y,5)
1 + 1*y + 1*y^2 + 1*y^3 + 1*y^4 + Order(y^5)
sage: _.subs(y=x)
TypeError: no canonical coercion from Laurent Series Ring in x over Rational Field to Symbolic Ring


sage: (1/(1-y)).series(x,5)
(same error)

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