Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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4 L*IBER* S*TATICÆ*
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colligendæ compendium infra damus) erit {499500/1000000}: </
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<
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xml:space
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graviora {1/1000000}, {2/1000000}, {3/1000000}, &</
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<
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xml:space
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<
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xml:space
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">quorum noviſſimum {1000/100000}, in ſummam colle-
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cta efficiunt {500500/1000000}. </
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<
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xml:space
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">Quamobrem fundo inſidet põdus majus quàm {499500/1000000}, minus
<
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autem quàm {500500/1000000} unius pedis cubici, atqui {499500/1000000} abeſt duntaxat {1/1000} ab {1/27}, quare
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pondus quod inſidet fundo ACDE deficit à dimidio pede defectu minore
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quam fit {1/10000}; </
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<
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xml:space
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">ſic {500500/1000000} excedit {1/2} pedis ſemiſſem {1/1000}, itaq; </
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<
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xml:space
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dus {1/1000} dimidium pedem excedens. </
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<
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xml:space
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">Simile ratiocinium inſtitues in cæteris,
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etiam poſitis quibuſliber quam minimis particulis. </
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<
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xml:space
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">Quare evidens eſt difſeten-
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tiam (ſi quæ tamen eſſet) inter aquam fundo ACDE inſidentem, & </
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<
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aquei pedis dimidium, minorem eſſe qualibet quæ animo concipi aut cogita-
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tione comprehendi poſſit. </
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<
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xml:space
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<
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exhiberi poteſt:</
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<
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xml:space
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">Sed pondere aqueo fundo A C D E inſidente, nullum ab aquæ pede dimidio minus
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differens exhiberi poteſt:</
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<
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<
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">C*ONCLVSIO*. </
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xml:space
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conſiſtit, &</
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<
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">CAuſa cur ſemiſſis iſte inter duos numeros perpetuò magis vicinos, nun-
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quam tamen concurrentes conſiſtar, hujuſmodi theoremate exprimitur.</
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<
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<
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xml:space
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">Numeris quotcunqueab unitate deinceps continuatis,
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dimidius noviſsimi numeri quadratus cedat ſummæom-
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nium, eandemq́ue noviſsimo numero multatam excedit.</
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</
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<
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<
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<
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">compendium in tanta numerorum multitudine
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addenda nunc explicem, ita habe. </
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<
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xml:space
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">primùm partium iſtarum nomen unum
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eſſe & </
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<
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">commune, quare hoc poſthabito ipſarum numeris animũ intendamus,
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ii igitur ab unitate continuò progreſſu unitate mutuò ſe ſuperant. </
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ctum à noviſſimo in ſui ſemiſſem multiplicato, is ipſe ſemiſſis additus dabit
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optatam ſummam. </
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1, 2, 3, 4, 5, 6. </
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21 optatam ſummam. </
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miſſem 2 {1/2} ductus facit 24 {1/2}, qui cum ſemiſſe 3 {1/2} compoſitus dat 28 optatũ ſum-
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mæ totius numerum. </
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<
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xml:space
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">At cum noviſſimus iſle impar erit, quî partium numeratio
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declinetur, unitatead noviſſimum addito eodemq́; </
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ſem multiplicato commodius abſolves. </
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<
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quæratur ſumma; </
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catus dabit 28 ut priùs. </
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<
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<
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">Luia ſupraſcriptus columnæ ſemißis, æquatur integræ item columnæ cujus baſis ſit
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fundum datum, altitudo autem ſemißis perpendicularis à ſummo fundi puncto, in pla-
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num per imum eius punctum borizonti parallelum demiſſæ; </
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enuntiari poterit.</
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<
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