Ah, I see. Thanks for clarifying that for me Peter. On Wednesday, January 22, 2014 8:41:24 AM UTC-8, Peter Bruin wrote: > > Hi Travis, > > so it looks like the 0*O(x^20) is just suppressed from the output in the >> (formal) power series ring. >> > > If you mean that this is suppressed when printing FPS(f): no, actually > FPS(f) has infinite precision, even though its parent FPS has a finite > default precision. Only when computing 1/f does the O(x^20) arise; the > default precision is used here because the result cannot be expressed as a > power series with infinite precision. > > Peter > >
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