Alvarus, Thomas
,
Liber de triplici motu
,
1509
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De motu locali quo ad effectum tempore difformi.
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162
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batur correlarium et in prima parte proportiona-
<
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li ꝑtranſeat illud mobile vnum pedale et arguitur
<
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ſic </
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<
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xml:space
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">In omnibus partibus tam paribus quam īpa-
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ribus ꝑtranſit illud mobile tria pedalia cum dimi
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dio: ſed triū pedaliū cum dimidio ad vnum pedale
<
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eſt ꝓportio tripla ſexquialtera: igitur correlarium
<
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verum. </
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<
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xml:space
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">Arguitur maior / quia in prima ꝑte impari
<
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ꝑtranſit vnum pedale et ſpacia pertranſita in om-
<
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/>
nibus partibus imparibus continuo ſe habent ī ꝓ
<
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portione dupla quoniam velocitates cõtinuo ſe ha
<
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bent in ꝓportione dupla et tempora in quadrupla:
<
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/>
et ſic totale ſpacium ꝑtranſitum in omnibus parti
<
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bus imparibus erit duplum ad ſpacium ꝑtranſitū
<
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in prima illarum / vt patet ex ſeptima concluſione.
<
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</
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<
s
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xml:space
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">ergo ꝑ cõſequens totale ſpacium pertranſitū in om
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nibus erit bipedale. </
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xml:space
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nibus paribus eſt pedale cum dimidio. </
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<
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xml:space
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">Quod pro
<
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batur ſic / quia cõtinuo velocitatis partis paris ad
<
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velocitatem ꝑtis imparis immediate precedentis
<
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eſt ꝓportio ſexquialtera: (cum velocitas illius par
<
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tis paris correſpondeat gradui medio inter gradū
<
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velocitatis illius partis imparis immediate prece
<
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dentis et gradum duplum) et ſemper gradus mediꝰ
<
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inter duplum et ſubdupluꝫ eſt ſexquialterus ad ſub
<
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duplum / vt conſtat. </
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<
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xml:space
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">igitur talis gradus medius erit
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ſexquialterus ad graduꝫ partis imparis immedia
<
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/>
te precedentis: igitur ſpacium pertranſitum in pri
<
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/>
ma parte ꝓportionali impari ſe habet ad ſpacium
<
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/>
pertranſituꝫ in prima parte proportionali pari in
<
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/>
ꝓportiõe ſexquitertia / vt patet ex ſexta propoſitio
<
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/>
ne ſecundi notabilis ſed ſubſexquitertium ad peda
<
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/>
le ſunt tres quarte et in omnibus ſequentibus pari
<
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/>
bus pertranſibit tantum: igitur in omnibus ſimul
<
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pertranſibit ſex quartas que faciunt pedale cum di
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midio. </
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<
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xml:space
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">et in imparibus pertrãſibit bipedale: igitur
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in omnibus partibus ſimul paribus et imparibus
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pertranſibit tria pedalia cum dimidio / quod fuit ꝓ
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bandum. </
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<
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">Reſtat tamen probare / in omnibus par
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tibus paribus ſequentibus ṗmã tm̄ pertranſit ſicut
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in prima. </
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<
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xml:space
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">Nam ille partes pares cõtinuo ſe habēt
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in proportione quadrupla et velocitates continuo
<
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ſe habent in proportione dupla aſcendendo / vt pa-
<
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tet ex caſu correlarii: ergo totale ſpacium pertran-
<
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ſitum in omnibus paribus eſt duplum ad ſpaci-
<
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um pertranſitum in prima illarum et ſic illud ſpaci
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um eſt .6. quarte. </
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">Conſequentia patet ex ſeptima cõ
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cluſione: hoc addito / proportio temporis excedit
<
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ꝓportionem velocitatum ꝑ ꝓportionem duplam:
<
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et totum diuiſum per partes ꝓportionales propor
<
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tione dupla eſt duplum ad primam illarum.</
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">2. correl.</
note
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<
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">¶ Secundo ſequitur / diuiſa hora per partes ꝓ-
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portionales proportione quadrupla: et in prima ꝑ
<
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te moueatur mobile aliquanta velocitate vniformi
<
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ter, et in ſecunda intendat motum ſum vniformiter
<
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ab illo gradu quo mouetur in prima vſ ad triplū
<
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et in tertia moueatur vniformiṫ illo triplo gradu et
<
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in quarta moueatur vniformiter intendendo motū
<
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ſuum a gradu quo mouebatur in tertia vſ ad tri
<
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plum illius: et ſic conſequenter ſemper in qualibet
<
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pari intendendo gradum īmediate precedentis im
<
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paris vſ ad triplum eiuſdem gradus vniformiter
<
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ſpacium pertranſitum in totali hora ſe habebit ad
<
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ſpacium pertranſitum in prima parte proportio-
<
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nali impari in proportione ſupra vndecīpartiente
<
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tridecimas. </
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">Probatur ſupponendo / medium in
<
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ter triplum et ſubtriplum eſt duplum ad ſubtriplū
<
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vt medium inter vnum et .3. eſt .2. / quod eſt duplū ad
<
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vnum. </
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<
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xml:space
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">Supponitur ſecūdo / velocitas ꝑtium īpa-
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rium immediatarum continuo ſe habent in propor
<
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De motu locali quo ad effectum tempore difformi.
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tione tripla et etiam partium parium / vt patet aſpi
<
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ciēti caſū correlarii </
s
>
<
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xml:space
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">His ſuppoſitis eſto / mobile ī
<
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prima parte proportionali pertranſit tridecim pe
<
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dalia: arguitur ſic in omnibus partibus imparibꝰ
<
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illud mobile pertranſit ſexdecim pedalia: et in om-
<
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nibus paribus pertranſit octo: igitur in tota hora
<
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ꝑtranſibit viginti q̈tuor: et .24. ad .13. pedalia ꝑtrã
<
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ſita in prima parte proportionali eſt proportio ſu
<
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pra vndecīpartiens tridecimas: igitur propoſituꝫ
<
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</
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<
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">Maior ꝓbatur / quia ꝓportio temporum ꝑtum im-
<
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parium que eſt ſexdecupla / vt conſtat: excedit ꝓpor
<
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/>
tionem velocitatis triplam ꝑ ꝓportionalem quītu
<
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plam ſexquitertiam, qualis eſt .16. ad .3. et quodli-
<
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bet totum diuiſum ꝓportione quintupla ſexquiter
<
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tia ſe habet ad primam ꝑtem eius ꝓportionaleꝫ in
<
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ꝓportione ſupertripartiente tridecimas / vt patet
<
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ex prima parte capite quinto: igitur in omnibus ꝑ
<
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tibus ꝓportionalibus imparibus illud mobile per
<
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tranſit .16. pedalia: </
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<
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concluſione huius: hoc addito / in prima parte im
<
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pari pertranſit .13. pedalia: et .16. ad .13. eſt ꝓportio
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ſupertripartiens tridecimas. </
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<
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">Et ſic patet maior
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</
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<
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">Minor ꝓbatur / quia ꝓportio temporum partium
<
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parium ſexdecupla / vt conſtat excedit proportionē
<
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/>
velocitatum triplam per ꝓportionem quintuplam
<
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ſexquitertiam / vt patet ex probatione maioris: et
<
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quodlibet totum diuiſum ꝓportione quintupla ſex
<
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quitertia ſe habet ad primam partem eius propor
<
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portionalem in proportione ſupertripartiente tri
<
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decimas: vt patet ex prima parte capite quinto: igi
<
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tur in omnibus partibus paribus pertranſit illud
<
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mobile ſpacium ſe habens ad ſpacium pertranſitū
<
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in prima illarum pariuꝫ in ꝓportione ſupertripar
<
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tiente tridecimas: et ſpacium pertranſitum in pri-
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ma parium eſt ſpacium. </
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<
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">ſex pedalium cum dimidio /
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igitur ſpacium pertranſituꝫ in omnibus partibus
<
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paribus eſt .8. pedum </
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>
<
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">Patet conſequen-
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tia: q2 .8. ad .6. cum dimidio eſt proportio ſupertri
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partiens tridecimas. </
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>
<
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">Probatur tamen / in pri-
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ma parte ꝓportionali illud mobile pertrãſit .6. pe
<
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/>
dalia cum dimidio: quia illa pars eſt ſubquadru-
<
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pla ad primã imparem: et velocitas illius eſt dupla
<
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/>
ad velocitatem ṗme imparis / vt patet facile ex ṗmo
<
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/>
ſuppoſito: igitur in illa ꝑte mobile pertranſit .6. pe
<
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/>
dalia cum dimidio. </
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>
<
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xml:space
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">Patet conſequentia ex ſexta ꝓ
<
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poſitione ſecundi notabilis, addito / in prima ꝑ-
<
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te ꝓportionali impari ꝑtranſit .13. pedalia: et ſic pa
<
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/>
tet minor: et ꝑ conſequens totum correlarium
<
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<
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right
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xlink:href
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note-0162-01a
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note-0162-01
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xml:space
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">.3. correl.</
note
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</
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<
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xml:space
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">¶ Sequitur tertio / partita hora ꝑ ꝑtes ꝓportio-
<
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nales ꝓportione quadrupla: et mobile in qualibet
<
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parte ſequente impari in quadruplo velocius mo-
<
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ueatur ꝙ̄ ī immediate p̄cedēti impari: et in qualibet
<
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/>
ſequenti pari etiam in quadruplo velocius mouea
<
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/>
tur ꝙ̄ in immediate p̄cedenti pari: et in duplo velo-
<
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cius in prima ꝑte pari ꝙ̄ in ṗma impari: tunc tota-
<
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/>
le ſpacium ꝑtranſitum in hora ſe habet ad ſpaciuꝫ
<
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/>
ꝑtranſitum in ṗma parte ꝓportionali impari ī ꝓ
<
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portione dupla </
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>
<
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xml:space
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">Hoc correlarium ex p̄dictis facile ꝓ
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bari p̄t </
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<
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xml:space
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">¶ Inferat quilibet ſuopte ingenio ꝓpriiſ
<
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viribus nõnulla ſimilia correlaria </
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>
<
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xml:space
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">Poſſunt enim
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īfinita inferri. </
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<
s
xml:id
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xml:space
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">vt puta ſi hora diuidatur ꝓportione
<
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dupla: et omnium partium parium velocitates con
<
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/>
tinuo ſe habeãt in ꝓportione ſexquialtera: omniū-
<
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/>
imparium ꝓportio velocitatum ſit ſexquitertia
<
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/>
ſit velocitatis ṗme paris ad velocitatem ṗme im
<
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/>
paris ꝓportio ſexquiquarta: tunc calcula totale
<
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/>
ſpcium ad ſpacium ꝑtranſitum in ṗma parte. </
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>
<
s
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xml:space
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preserve
">Item
<
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conſciſa hora in partes ꝓportionales ꝓportiõe tri
<
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/>
pla: et omnium partium imparium immediatarum </
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>
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