id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,merged,author,reviewer,upstream,work_issues,branch,commit,dependencies,stopgaps
15698,conversion from polynomial fraction to its power series expansion,rws,rws,"Original description was:
The following behaviour is not implemented, example:
{{{
sage: R. = QQ[]; A=1/(1-t)
sage: A.expand(5)
1+t+t^2+t^3+t^4+t^5+O(t^6)
sage: A+O(t^6)
1+t+t^2+t^3+t^4+t^5+O(t^6)
}}}
Add a parameter to specify the respective series variable (for derivation) then multivariate polynomial fractions can be handled. Result type being a power series. The pari function Ser() implements the same behaviour. Note: I would like to implement this.",enhancement,closed,major,sage-6.2,algebra,fixed,"power series, expansion, fraction",,,"Ralf Stephan, Marc Mezzarobba","Marc Mezzarobba, Ralf Stephan",N/A,,25f819f748f64634177097da20cc9bbf1c2a68df,25f819f748f64634177097da20cc9bbf1c2a68df,,