On the Eelatively Abelian Corpora. 



57 



i 18. 



Hereafter, for the sake of simplicity, we shall denote the 

 corpora A'(sn^}), k{^{^^)), A'(lf(^/) by SO'), A». PXt') re- 

 spectively. 



As shewn in the preceding section, F^m) is the class-corpus 

 corresponding to the group ^1 of numbers a, such that 



« = 1 (mod. m). 



On the other hand, l^lm] is the class-corpus corresponding to the 

 group B of numbers ß, such that all these numbers ß belong to the 

 order [î^i^] and satisfy the condition 



7i(ß) = 1 (mod. 7n). 



Now, if we suppose that 



a = a + bp = 1 (mod. m), 



