Alvarus, Thomas, Liber de triplici motu, 1509

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91 tem equalē vel maiorē magis reſiſtentiã quã potē-
tia
vt .10. / et per cõſequēs ↄ̨tinuo potentia illa vt .16.
maiorē
proportionē deperdit per acquiſitionē re-
ſiſtentie
quã potentia vt .10.
Patet hec conſequētia
ex
ſecūda ſuppoſitione octaui capitis huiꝰ.
Quã-
uis
em̄ hec potentia varietur: nichilominus ex par­
te
acquiſitionis reſiſtentie tantã ꝓportionē vel ma­
iorem
deperdit ac ſi maneret cõtinuo īuariata: igi­
tur
cõtinuo maiorē ꝓportionē deperdit / quod fuit
probandum
.
Reſpondeo negãdo antecedens: ad
ꝓbationē
admiſſo caſu nego maiorē: et ad ꝓbatio-
nem
nego antecedens videlicet / continue maiorē
ꝓpõrtionē
deperdit: et cum ꝓbatur concedo antece­
cedens
/ et nego cõſequentiã: ſed bene ſequitur / ma­
iorē
reſiſtentiã ꝓportiõabiliter acquirit.
Quãuis
em̄
deperdat cõtinue ꝓportionē maiorē per acqui-
ſitionē
reſiſtentie tamen ſemper aliquã ꝓportionē
acquirit
per intenſionē potentie.
Et ſic argumentū
bene
ꝓbaret ꝓpropoſitū ſi potentia non intenderetur
Sed contra / quia tunc ſequeretur /
ſi
potentia illa remitteretur cõtinuo ipſa poſſet
vniformiter
remittere motū ſuū illud mediū tran-
ſeundo
: ſed cõſequens eſt contra correlariū ſecūde
ↄ̨cluſionis
octaui capitis huiꝰ / igitur ſolutio nulla
Probatur ſequela / q2 tūc talis potentia continuo
moueretur
velocius alia potentia maiore varia­
ta
difformiter remittente motū ſuū idem medium
tranſeundo
verſus extremū intenſius: igitur con-
tinuo
maiorē ꝓportionē deperderet: et per conſe-
quens
velocius continuo remitteret motū ſuū quã
potentia
maior vt .10. variata: et ſic vniformi­
ter
.
Cõſequentia tamen ptꝫ ex ſecūda ſuppoſitione
octaui
capitis preallegata.
Sed ãtecedens arguit̄̄
videlicet
/ potentia illa vt .16. cõtinuo velociꝰ mo-
ueretur
: et pono potentiã vt .16. ſimul cum potentia
vt
.10. ad principiū vltime quarte puta ad punctum
vt
.4. / et pono potentiã vt .8. variata ꝑtrãſeūdo
c
. mediū īuariatū cõtinuo vniformiter remittit mo-
ſuū ad punctū ītrīſecū eiuſdē vltime q̈te / ad qḋ ha­
bet
ꝓportionē irrationalē ſubduplã duple: et mo-
ueantur
ſic oēs ille potentie ſimul ab eodē inſtanti /
quo
poſito ptꝫ / maior potentia variata puta vt
16
. cõtinuo velocius mouebitur quã potentia vt .10.
qm̄
potentia vt .16. incipit moueri a multo maiori
proportione
: igitur propoſitum.
Hec em̄ a dupla
ſexquialtera
: illa autem a quadrupla ſuum motum
inchoat
/ vt patet ex caſu.
Reſpõdeo negando ſequelã / ad pro-
bationē
nego / potentia vt .16. continuo velocius
mouebitur
quã potentia vt .10. maior variata / et
ꝓbatur admiſſo caſu nego antecedens.
Dico em̄ /
illa potentia maior vt .16. variata antea quã de-
euniat
ad finē ab in infinitū parua ꝓportione mo-
uebitur
qm̄ ipſa ſic cõtinue remittente altera re­
mittente
motū ſuū ad gradū: neceſſe eſt ipſã ad
gradū remittere ſimiliter motū ſuū: et ſic ab in
īfinitū
parua ꝓportiõe moueri / vt ſepiꝰ ſupra argu­
gutū
eſt. 111. correĺ.
Ex quo ſequit̄̄ / ſi aliqua potētia varia­
ta
moueretur vniformiter cõtinuo remittēs motuꝫ
ſuū
ad gradū alia variata: et moueret̄̄ cõ-
tinuo
a ꝓportiõe in cētuplo vel millecuplo vel quã-
tūcun
volueris maiori: ipſã ab in infinitū parua
ꝓportiõe
mouebit̄̄ antea quã deueniat ad finē quã­
quecū
potētia quãtacū parua remittēte mo­
tum
ſuū ad gradū idē mediū trãſeūdo.
Hoc ptꝫ
ex
ꝓbatione concluſionum precedentis capitis.

Tertio principaliter cõtra eandē cõ-
cluſione
arguit̄̄ ſic / q2 ſi illa eſſet vera / ſeq̄ret̄̄ a. potē­
tiã
maiorē variatã in īfinitū intēdi: ſed ↄ̨ſequēs eſt
falſū
: igit̄̄ illud ex quo ſequit̄̄: falſitas cõſequentis
apparet
manifeſte: qm̄ tūc cõtinuo remittet mo­
tum
ſuū.
Plus em̄ aliquãdo accreſceret ſibi de pro­
portiõe
intēſionē ſue potentie quã deꝑderet̄̄ re-
ſiſtentie
acquiſitionē.
Seq̄la tamē ꝓbat̄̄ / qm̄ in īfi-
nitū
vetociter intendit̄̄ ipſa a. potētia: igit̄̄ ipſa in
īfinitū
ītendit̄̄.
Aneecedēs ꝓbat̄̄: qm̄ in īfinitū velo-
citer
ꝓportiõabiliter accreſcet ſibi reſiſtētia / vt ptꝫ
ex
ꝓbatiõe quīte cõcluſiõis ſeptimi capitis huiꝰ: et
ipſa
cõtinuo vniformiter remittit motū ſuū: igit̄̄ in
īfinitū
velociter accreſcit ſibi potentia.
Minor eſt
nota
ex cõcluſiõe: et ꝓbat̄̄ ↄ̨ña / qm̄ ſi ſolū finite velo-
citer
accreſceret ſibi potētia: et reſiſtētia in īfinitum
velociter
ei accreſceret ſequeret̄̄ / ſemꝑ eque ve­
lociter
deꝑderet ꝓportionē: et ↄ̨ñs vniformiter
remitteret
motū ſuū: igit̄̄ ſi cõtinuo vniformiter re­
mittit
motū ſuū: et in īfinitū velociter ꝓportiõabi-
liter
acquirit̄̄ ſibi reſiſtētia: ſequit̄̄ / potētia eiꝰ in
īfinitū
velociter intēdit̄̄.
Patet hec ↄ̨ña / qm̄ oppo-
ſitū
cõſcqrētis altera parte ãtecedētis īfert op-
poſitū
alteriꝰ partis eiuſdē ãtecedētis.
Sed ꝓbo
ãtecedēs
/ eſt vna cõditiõalis videlicet / ſi ſolū fini­
te
velociter creſceret ſibi potētia et reſiſtētia in īfini­
velociter ei accreſceret / ſeq̄ret̄̄ / ſemꝑ eque­
velociter
deꝑderet ꝓportionē: et ſic vniformiter
cõtinuo
remitteret motū ſuū: q2 ſi ſolū finite veloci-
ter
accreſceret ſibi potētia: et reſiſtētia in īfinitū ve-
lociter
ei accreſceret: ſeq̄ret̄̄ / in īfinitū velocius
ꝓportiõabiliter
accreſceret ei reſiſtētia quã poten-
tia
: et ↄ̨ñs in īfinitū maiorē ꝓportionē deꝑderet
acquiſitionē
reſiſtētie quã acquireret acquiſitio-
potētie: et ex cõſequēti in īfinitū velociter deper-
deret
ꝓportionē: et ſic ſemꝑ eque velociter deper­
deret
ꝓportionē nec continuo vniformiter remitte­
ret
motū ſuū: et ſic de primo ad vltimū ptꝫ illa ↄ̨ña
ꝓbanda
.
Cõſequētia ptꝫ videlicet / ſi ſolū finite ve­
lociter
accreſceret ſibi potētia: reſiſtētia in īfinitū
velociter
ei accreſceret ſequeret̄̄ / in īfinitū velociꝰ
ꝓportionabiliter
accreſceret ei reſiſtentia quã po-
tentia
: qm̄ ſi cõtinuo eque velociter accreſceret ſibi
reſiſtētia
ſicut potētia: velocius ꝓportiõabiliter ac­
creſceret
quã potētia / vt ptꝫ ex octaua ſuppõe q̈rta
capitꝪ
ſcḋe partꝪ: hoc addito / ↄ̨tinuo potētia ma­
net
maior: ſꝫ modo ī īfinitū velociꝰ accreſcit ſibi re­
ſiſtētia
quã potētia: in īfinitū velociꝰ ꝓportiõabi­
liṫ
accreſcit ſibi reſtētia quã potētia / qḋ fuit ꝓbãdū
Reſpõdeo negãdo ſeq̄lã: ad ꝓbatio-
nego ↄ̨ñam / nulliꝰ eſt apparētie.
Stat em̄ / ali­
quid
in īfinitū velociṫ intēdi in hora: et ſolū finite
intēdi
: vt ſatis cõſtat ſi diuiſa hora partes ꝓpor­
tiõales
ꝓportiõe q̈drupla: in ṗma illaꝝ acq̇rit̄̄ ali-
cui
corpori vnꝰ gradꝰ calditatis, et in ſcḋa dimidiꝰ
et
ī ṫcia, vna q̈rta, et ſic ↄ̨ñter: partes ꝓportioãles
ꝓportione
dupla: tunc manifeſtuꝫ eſt / tota illa ca­
liditas
erit duorum graduum in fine adequate / vt
patet
ex ſecundo correlario tertie concluſionis quī-
ti
capitis prime partis:
Ibi enim acquiritur illa q̈-
litas
per partes ꝓportionales ꝓportione dupla:
igitur
reſiduuꝫ a prima eſt equale prime: et prima
erit
vnus gradus: ergo totum eſt duorum graduuꝫ
adequate
/ vt patet ex ſucūdo correlario preallega-
to
: et tamen in infinitum velociter acquiritur illa ca­
liditas
: quoniam qualitas illa acquiritur in ſecun­
da
parte ꝓportionali in duplo velocius quã in pri­
ma
et in tertia in duplo velocius quam in ſecunda. /

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