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2021-01-14 19:35:39
WERNER, Johannes
In hoc opere haec continentur: Libellus super Vigintiduobus Elementis Conicis eiusdem Ioannis, de motu octavae Sphaerae, Tractatus duo; eiusdem Summaria enarratio Theoricae motus octavae Sphaerae
Nuremberg, Friedrich Peypus for Lucas Alantsee, 1522. The extremely rare first edition of Johannes Werner s original publication on the theory of conic sections and on the motion of the eighth sphere. Communicated to Copernicus by the Polish cartographer Bernard Wapowski as an extract and covering only the motion of the eighth sphere , this section was critically studied by Copernicus, resulting in the so-called Letter against Werner. Whereas the original exchange between Wapowski and Copernicus was most probably intended to be private, Wapowski decided to share his friend s assessment of this single section of Werner s work. Manuscript copies of Copernicus Letter subsequently circulated among major scientists over a period of time, partly resulting in the wider distribution of Werner s entire printed work. Werner s mathematical works are in spherical trigonometry and the theory of conic sections. Werner s Libellus is a collection of five separate works published and financed by Werner s rich friend, the publisher Lucas Alantsee (died 1523 Vienna). The work, in five parts, which was written between 1505 and 1513, was not revised for publication by Werner. The treatise containing twenty-two theorems on conic sections was intended as an introduction to his work on duplication of the cube. For that reason Werner dealt only with the parabola and hyperbola but not with the ellipse. In a manner similar to the methods of Apollonius, Werner produced a cone by passing through the points of the circumference straight lines that also pass through a point not in the plane of the circle … [Click Below for Full Description]
Bookseller: Detlev Auvermann Rare Books [Sevenoaks, KENT, United Kingdom]
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