31st Mar, 2020 11:00

Books & Works on Paper including Autographs & Memorabilia

 
  Lot 4
 

Angeli (Stefano degli)

Angeli (Stefano degli)

De Infinitorum Spiralium spatiorum mensura, opusculum geometricum, FIRST EDITION, half title, large woodcut to title, initials and ornaments, woodcut diagrams in text, contemporary English calf, re-backed, extremities rubbed, light age yellowing, peripheral leaves toned, [Riccardi I, 34], 4to, Giovanni La Nou, Venice, 1660.

*** A scarce and significant tract on the measurement of spirals using indivisibles, an important precursor of infinitesimal calculus. Stefano degli Angeli (1623-1697) was a Jesuat mathematician and pupil of Bonaventura Cavalieri, who had developed the method of indivisibles. He spent much of the 1660s clashing with the Jesuits over the method - that conflict probably underlying Pope Clement IX’s decision to abolish the Jesuati in 1668.


 

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