Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

Table of contents

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[41.] Theor. XII. Prop. XV.
[42.] Theor. XIII. Prop. XVI.
[43.] Theorema XIV. Propos. XVII.
[44.] Theor. XV. Propos. XVIII.
[45.] Theor. XVI. Propos. XIX.
[46.] Problema IV. Propos. XX.
[47.] Christiani Hugenii C. F. ILLVSTRIVM QVORVNDAM PROBLEMATVM CONSTRVCTIONES. Probl. I. Datam ſphæram plano ſecare, ut portiones inter ſe rationem habeant datam.
[48.] LEMMA.
[49.] Probl. II. Cubum invenire dati cubi duplum.
[50.] Probl. III. Datis duabus rectis duas medias propor-tionales invenire.
[51.] ALITER.
[52.] ALITER.
[53.] Probl. IV.
[54.] Probl. V.
[55.] Probl. VI.
[56.] Probl. VII.
[57.] Utrumque præcedentium Aliter.
[58.] Probl. VIII. In Conchoide linea invenire confinia flexus contrarii.
[59.] FINIS.
[60.] DE CIRCULI ET HYPERBOLÆ QUADRATURA CONTROVERSIA.
[61.] VERA CIRCULI ET HYPERBOLÆ QUADRATURA AUTHORE JACOBO GREGORIO. LECTORI GEOMETRÆ SALUTEM.
[62.] DEFINITIONES.
[63.] PETITIONES.
[64.] VERA CIRCULI ET HYPERBOLÆ QUADRATURA.
[65.] PROP. I. THEOREMA. Dico trapezium B A P I eſſe medium propor-tionale inter trapezium B A P F, & triangulum B A P.
[66.] PROP. II. THEOREMA. Dico trapezia A B F P, A B I P ſimul, eſſe ad du- plum trapezii A B I P, ſicut trapezium A B F P ad polygonum A B D L P.
[67.] PROP. III. THEOREMA. Dico triangulum B A P, & trapezium A B I P ſimul, eſſe ad trapezium A B I P, ut duplum trapezii A B I P ad polygonum A B D L P.
[68.] PROP. IV. THEOREMA. Dico polygonum A B E I O P eſſe medium pro- portionale inter polygonum A B D L P & trapezium A B I P.
[69.] PROP. V. THEOREMA.
[70.] SCHOLIUM.
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141414DEFINITIONES. eodem modo quo E componitur à quantitatibus C, D,
vel C à quantitaiibus A, B, componatur G à quantita-
tibus E, F;
& eodem modo quo F componitur à quan-
titatibus C, D, vel D à quantitatibus A, B, componatur
H à quantitatibus E, F;
atque ita continuetur ſeries:
appello hanc ſeriem, ſeriem convergentem.
10 Ejus termini juxta ſe poſiti nempe A, B, vel C, D, vel
E, F, vel G, H, dicuntur termini convergentes.
PETITIONES.
1 Petimus quantitates, à quantitatibus datis inter ſe ana-
lyticis analyticè compoſitas, eſſe inter ſe &
cum
quantitatibus datis analyticas.
2 Item quantitates, quæ à quantitatibus datis inter ſe ana-
lyticis non poſſunt analyticè componi, non eſſe cum quan-
titatibus datis analyticas.
Præcedentes petitiones quibusdam fortaſſis obſcuræ videbun-
tur, ſed tamen ex analyſeos elementis ſunt ſatis mani-
feſtæ.

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