100 
DE CONGRUENTIIS SECUNDI GRADUS. 
\ 
lato theoremate fundamentali cum theorematibus art. 111, sequentes propositio 
nes facile deducentur. 
Si 
erit 
1. 
4~ alio! . . . 
. . . . + a lia 
2. 
4~ a Na ... 
. . . . + a Na 
3. 
j —f- a R b) 
i— aNb) 
. . . . + bRa 
4. 
|-f- aNb) 
i — a Ii b' 
. . . . + bNa 
5. 
"I - bJRa . . . 
(-(- aRb 
’ ‘ f— aNb 
6. 
-\~ bNa . . . 
)-(- aNb 
\ — aRb 
7. 
j+ bRb'\ 
f — bNb' i 
(+ b'Nb 
(— b'Rb 
8. 
bNb') 
(— blib' i 
(+ b'Rb 
\— b' Nb 
132. 
In his omnes casus, qui, duos numeros primos comparando, occurrere pos 
sunt, continentur: quae sequuntur, ad numeros quoscunque pertinent: sed harum 
demonstrationes minus sunt obviae. 
Si erit 
9. 
-\~ aRA. . . . . 
. . . 4" ARa 
10. 
+ bRA . . . . 
| —(— ARb 
1— ANb 
11. 
-j- aRB . . . , 
... 4" BRa 
12. 
— aRB. . . . 
. . . ± BNa 
13. 
+ bRB . . . , 
j— BRb 
■ ¡4- BNb 
14. 
— bRB . . . . 
(-f BRb 
i— BNb