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# Title: [Arnoldi Geulincx Antverpiensis, Methodus Inveniendi Argumenta Quae Solertia Quibusdam dicitur] Arnoldi Geulincx Antverpiensis, Methodus Inveniendi Argumenta Quæ Solertia Quibusdam dicitur (shelfmark Leibn. Marg. 229)
# Folio 87, page id 1684858631:0101
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C A D U Y TTT.
S
Prop. Dico quod D. interat C.
c. T. b. 2. a.
Rac. Ouia AB. Cc Fallum, A. etram
erit Faltum, c. 2. c. 8. Igitur B. eAe Fal-
Tumm. est dictum ancecedentis, e A.
ese talsum est dictum conlequentis,
c. 2. c. 9. a. T. (Cd D. nihil aliud dicie,
quam B. esse Fallum, _ C. nihil aliud
dicit, quam A. eAC FalluIm, c. 13.
Concl. lgitur D. CA antecedens, et
C. ejus Consequens, c. 2. P. s. . X. (Cu D. I1-
TertC. 3 c. 2. d. T.
COMMEN TARIVS.
Atque hic jactum est fundamen
cum Conversionis Soririex (ut eam
cgovoco) quam in quolibet Theo-
remate exercere licer: ex in eo lta
est, quod ex Contradictione Conse-
quencis interatur C oneradictio An-
cecedentis; adeoque norum TheO-
rema condatur, constans Contradi-
ctione Consequentis, ut Anteceden-
te, e Contradictione Antecedentis,
ut Consequente: v. 8. dato eAato 4.
Cap.. T. quod ibidem est primum
Theo