xxxii INTRODUCTION

element seem however to be in agreement with our theory. For instance there seems

to be an important ideological difference between our operator

ov

: L

— L,

ova

= ,

P

and the absolute derivation introduced in [86],

— Z ^ Z , — (p'rrO^ep'-V

op op

where m £ Z is prime to p. Indeed the constants of Sp are 0 and ±1 while the

constants of d/dp are 0 and all the integers coprime to p. This suggests that,

according to the philosophy of Fi, there is no theory of Fi that involves one prime

only; the only theory about Fi would involve all the primes at the same time. On

the contrary, in our book, there is a theory for each individual prime.