Hi bo

I edited my post a bit, there was that obvious mistake with 3rd superroot.

Yes is naively set-but is it not provable from GFR , your formulas for superroot involving Lambert function? As Knuth says, it is not based on real number limits only. More like an agreement needed for symbolic machine calculations using binomial theorem etc.

Ivars

I edited my post a bit, there was that obvious mistake with 3rd superroot.

Yes is naively set-but is it not provable from GFR , your formulas for superroot involving Lambert function? As Knuth says, it is not based on real number limits only. More like an agreement needed for symbolic machine calculations using binomial theorem etc.

Ivars