Re: [fricas-devel] traps in working with powerseries

2018-11-28 Thread Ralf Hemmecke
On 11/29/18 3:48 AM, Andrey G. Grozin wrote: > On Wed, 28 Nov 2018, Ralf Hemmecke wrote: >> Suppose, p is an infinite powerseries and p' is it's inverse. Then >> c=p*p' is a series that only has zero coefficients after the constant >> term. >> >> Then creating the stream of (coefficient,

Re: [fricas-devel] traps in working with powerseries

2018-11-28 Thread Andrey G. Grozin
On Wed, 28 Nov 2018, Ralf Hemmecke wrote: Suppose, p is an infinite powerseries and p' is it's inverse. Then c=p*p' is a series that only has zero coefficients after the constant term. Then creating the stream of (coefficient, exponent)-pairs, i.e. calling terms(c) leads to a stream that cannot

[fricas-devel] traps in working with powerseries

2018-11-28 Thread Ralf Hemmecke
Hi, working with powerseries has quite some traps. Suppose, p is an infinite powerseries and p' is it's inverse. Then c=p*p' is a series that only has zero coefficients after the constant term. Then creating the stream of (coefficient, exponent)-pairs, i.e. calling terms(c) leads to a stream