rnEO^nMATn FERMATUNI 27 



Porro fi hiiec fingula rcfidiiii per fingula fuperiora 

 mi]itip]icentur , et produda infra 19 deprimiintur, iidem 

 pr<3deunt numeri ; roultiplicetur lenim inferior fcries pri- 

 1x10 pcr 5, tum per 6, et 11, 17, etc. vt lequitur : 



Pcrfpicitur igitnr, quomodociinquc hi numeri, i, 4, 9. 

 !<?, (5, 17, II, 7, .5 feriem refiduorum conftituentes, 

 inter le per niultip!ic:^rioncm combinentur , fiqnidem 

 d-iuifionc per ig fKfta infia 19 dcprimantur, eosCcm 

 lenipei- nunveros rtcuirere, neqr.e vnqiiam vlium nume- 

 rum eorum, qui non funt refidua, nempe 2, 3, 8, 10, 

 13, 15, 14, 15, 18 piodire. 



C R O L L. 4. 



36. Si ergo fit i, a, p, y, (^, etc. feiics re- 

 fipucrum oninium , quae ex diuif.one quadratorum per 

 nitn^^.erun.i p rcfultant , in eadem (trie quoque occurrent 

 ORinia produda cx linis pluribusue numetoium a, (3 y, $^ 



cxc. Ergo f, haec expreffio -i^^^—fiiizry—^. in 

 feviem euoJuatur, omnes cius term.ini in Jerie rcfiduoru.m 

 occurrent. 



D 4 THEO- 



