Viviani, Vincenzo, De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei

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8662 noſtræ æquidiſtantium portiones non ſint MINIMAE, quæ à punctis alterutrius
ſectionis
ſuper aliam educi queant:
unde ob hoc Hieronymum Cardanum aſſectari
nos
debuiſſe, qui iuxta perpendiculares à punctis hyperbolicæ ſectionis ſuper aſym-
pton
ductas, ipſarum linearum interualla meditatus eſt;
quod nullos alios, admi-
randum
Apollonij hoc Theorema diſcutientes, animaduerſos fuiſſe, idem Barocius
in
ſuo quodam commentario Geometrico ſæpiùs admonuit, inter alia hæc proferens;
_quem errorem, omnes quos vidihuius rei Auctores commiſerunt, præter Car-_
_danum_
.
Sed bùc bonum Virum edoctum velimus, hoc idem iamdiu nobis innotuiſſe,
verùm
deditaopera, æ libenter in hoc deſicere nobis placuiſſe cum ſummis Viris, qua-
les
, eos inter quos maximè colimus, ſunt Torricellius, &
Gregorius à S. Vincentio,
immo
ipſemet Apollonius tam reconditi ſymptomatis fortaſſe primus, &
acutiſsimus
indagator
.
Præterea, nos quoque ſatis agnouiſſe, vnius puncti diſtantiam à quacun-
que
ſeu recta, ſeu curua linea, ſtrictim aſſumendam eſſe iuxta MINIMAM ex
eodem
puncto, ſuper datam lineam eductam.
Inſuper ipſam MINIMAM d@m@ſſas
quel
, datæ rectæ, vel contingenti ad datam curuam in puncto occurſus perpendicu-
lariter
inſiſtetc quæ omnia hùc in proximo noſtro libello perſpicuè apparebunt:
at-
tamen
hiſce, alijſque notionibus de his inſtructi, alteram methodum conſultò eli-
gere
maluimus.
Itaquè ab humaniſsimo Barocio de hoc, cui ſanè criminis nomen
falsò
tribuitur, veniam expectamus;
dum nos etiam, & ſua, quæquæ ſint ab ipſo
ſparſim
prolata reticere parati ſumus.
Interea concedat quæſo, vt ad inuentionem
MAXIMARVM
MINIMARV Mque coni- ſectionum per diuerſos vertices inſcri-
ptibilium
, aut circumſcriptibilium, vel ſaltim vt genio quodam noſtro indulgendo,
harum
ſectionum diſtantias per æquidiſtantium interpoſita ſegmenta nobis perſcru-
tari
liceat.
Perlegat inſuper, ſimulque has meditationes percipiat; quod ſi ex hac
hypotheſi
ipſas euidenter comprobatas inuenerit, fateatur, ſi lubet, nos abundè in
his
Geometræ partem expleuiſſe;
ſin aliter, incuſatione dignos exiſtimet.

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