On Fri, Nov 14, 2025 at 03:54:34PM +0100, Franz Lehner wrote:
> On Fri, 14 Nov 2025, 'Ralf Hemmecke' via FriCAS - computer algebra system
> wrote:
> > f(x: Stream R): Stream R == cons(1,x*x)
> thanks, this gives an equivalent result,
> but what exactly causes the other one to exhaust the stack?
> a consequence of nonuniqueness of the solution?
I did not look at details, so I am not sure if this is the reason,
but you need to specify first (index 0) term of the series. AFAICS
Ralf's definition did this, yours did not. For index 0 term
you get equation
x0 = x0*x0
which is infinite recursion.
--
Waldek Hebisch
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