I've uploaded that "WexZal"-article; it is originally in plain text (around 1998, if I recall right) but I thought it might be better to have it in .pdf. In a private mail the author welcomed to distribute this text. I'll add that statement later (I'll put it into Henryk's lib, too)
WexZal.pdf (Size: 666.98 KB / Downloads: 1,708)
A treatize of iterated exponentiation and inverse, seemingly initially inspired by the question of superroot of order 2. Mentions two practical applications
WexZal.pdf (Size: 666.98 KB / Downloads: 1,708)
A treatize of iterated exponentiation and inverse, seemingly initially inspired by the question of superroot of order 2. Mentions two practical applications
Gottfried Helms, Kassel