id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,merged,author,reviewer,upstream,work_issues,branch,commit,dependencies,stopgaps
17879,wrong ex.substitution of x*y,rws,,"{{{
sage: x,y = var('x,y')
sage: f = x*y + x^2*y^2 + x*y^2
sage: f.subs({x*y:u})
x^2*y^2 + x*y^2 + u
}}}
This is from http://ask.sagemath.org/question/25972/substitute-xy-by-u/
It seems the current substitution system is not sophisticated enough to get the expected result.",defect,closed,major,sage-duplicate/invalid/wontfix,symbolics,wontfix,,,,,Vincent Delecroix,N/A,,,,,