There's a probem with multiple substitutions in Sage 9.0.
sage: var('x,y') (x, y) sage: (*1*/x)(x=*1*/y, y =*42*) 42 Sage 8.1 gives the following, which is the correct behavior sage: var('x,y') (x, y) sage: (*1*/x)(x=*1*/y, y =*42*) y -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/180de0eb-c7f3-44cf-bdba-9a6a5b0fdd61%40googlegroups.com.