On 26 mei 2005, at 21:22, Micha Nelissen wrote: > Define "natural" please ? If I write 2**3**5, I probably mean 2^3^5 = > (2^3)^5, not 2^(3^5). In this case, FP is "right". Well, I guess he means that if you write it on paper, you write (view in fixed width font) 4 3 2 which indeed is 2^(3^4) Jonas