( 29l j 
, , , „ n „ identical to r,. We then further notice, that Si 
L md ' ! ve ! Z S of he circumference of T r free between 
TXoTt f&» * coherent, though of „ this is not yet 
certain). ,j b oal .t of the circumference of T,, 
Otherwise namely . wouh. ^ ^ ^ „ 
S to ; a part 5 of the circumference of ^ outside i andr, 
Tabout , and s' the domains 0 and 0' could be enlarged. 
r 
either We can then represent ^ schematically according to flfr . 
where each of the segments represents an arc of curve, to whmh 
wnere eacn , ot +*phpd • however no ramifications 
further ramifications may be attached, . , betwee n 
cohere with the schema between ap and ah, and neither between 
to a new arc of curve. In an analogous way the sets Z an 
represented in this figure *)• 
Fig. 5. 
Now the situation of the three sets 
to each other can be in different ways 
possibilities are represented in fig. 6* 
T r , Z'r> and Zi with respect 
in this case; the two essential 
1) Iu may also be treated in a less direct way, analogously 
*) Some of the segments of these figures may shrma 
does not injure the correctness of our conclusions. 
to 16. 
however 
