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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica (shelfmarks Leibn. Marg. 100:1/2, Stück 1; Leibn. Marg. 100:1/2)
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IS I O N
Siquando (vel in hac vel in alia quaris
OpClationiS FOrMA) Diritor Ciphris (una vel
Pluribito) cermineeur; ne tiac inanis 1Oc C1-
phrarum repecuio, rejectis cipnto L.I de (
mus abseitiis cocilem ex ulcimis dividendi H.
Suris, in numeris reliquis tiac divisio: lia
tamen, uc peracto opere, relticuantur cam di
rico ciphrae abjecta quam diricenet sctau
ablelllae tigura, uc in exemplo appolico.
Si denique mallet quis Diritoris mulcipla quam ipsum Dirisorem tories deseri- Operatio-
bere; quod torcalle (praeleruim in Diritionibus majoribus peragendis) non erie nt sorua
incommodum: Poculi quiaeu lu tiert ad hane formam.
378) 6639642 (6789
888000
9642
20300)3 +B=1 (356 203
6639642 (678
5
nalibu
alta.
39642
9785
10562
8802.
Cum enim omnino perinde Cic sive Dirisorem suo loco sub Diridendi figuris
actu scribamus, sire quasi seripeum esec supponamus; licebit ipsum semet tancum
loco commodo deleribere, ejusque deinceps repecitionem omitere; de (inventis
successire Ouociencis figuris) debira mulcipla suis locis describere, de descripia
subducere. Sic verbi gracia, diriloris sexcuplum 5868 ex 6639 subduetum relin-
quic (superne scribendum) 77r. Tum diriloris sepcuplum 6846 Cx 7716 lub.
ductum, relinguit 870. Et diritoris octuplum 7824 ex 8704 subductum relin-
quic 880. Denique diriloris noncuplum 8802 ex 8802 ubductum nihil relin-
quic.
Acque in hac operacionis Forma, praeterguam quod pacum memoriae commiticu,
hraec Calcem habet commoca; nempe, liquando cadem tigura in Onociente (apius
OcCuErerE continSIE nOn OpuS erit cocies mulciplicationem exercere, sed mulci-
plum prius inrentum toc quot opus erir locis repetere; quod quidem in majori-
bus diritionibus non parrum aliquando eris compendium. Icem, ubi peracta est
operatio, licet omnia ilthaec mulcipla (cum residuo siquod sit) Cunul addere, quo
conster an subductiones recte fuerine peractae (nempe ex consentu vel dilsensu
Cummae sic invenex arque propolici numeri diridendi;) acque mulciplicationem
quamlibel, liguia lupecu  Cto a exaaIC.
Sthe incerim meruendum, nequa contutio oriatur ubi Dirrtor non  la sede
comspletendus; potest ilti malo lacis caveri, totidem vel punctis vel circellis fI
Opus HIC) diriloris loco collocatis quor ipse continet fguras: puta (in exemioio
vraenuillo) ponancur prinum ires circeth lub diridenditiguris 630; de deinde (clut
in proximum locum promorendus lic airilor) deleto eorum prima quarcus appo.
atur, vc jam lub figuris 396 eres conspiciantur, et la cs  uIS divi-
Foris promocionibus uno delero alius Tubjunsatur.
Denique, ucile nonnunquam eris, praelerrun in Diritionibus erandioribus, (nam
in minoribus vix erie opera precium) ance inchoacam Diritionis operationem
Fingula Dirisoris mulupla (decuplo minora) simul deseripea habere, (ut n enet
Plo peaemilto extribummus,) unde uc opus erie in Diritionis operationem cransterri
Postine; ee quidem in quocientis tiguris prompre inveniendis auxilio erie, llacim
enim line aliis centamentis inde parebit quod mulciplum auterri porerit; uc in
exemplo praemisto. Racim rideo numerum 6639, divitoris (878) lexcup Maso
militer in reliquis.
rem esse de sexcupto minorem; adeoque primam Quocienuis tisuram 6. Et l.
Alque