Theorie der goniometrischen und der longimetrischen Quaternionen

Synopsis of Theorie der goniometrischen und der longimetrischen Quaternionen

«Theorie der goniometrischen und der longimetrischen Quaternionen» is a treatise by Karl Wilhelm Unverzagt, published by Antigonos Verlag in paperback.

The book develops a mathematical theory based on quaternions and their application to goniometry and longimetry, that is, to the measurement of angles and lengths. The author sets out definitions, propositions and proofs with his own notation, in the style of nineteenth-century German mathematics. This edition reproduces the text of 1876.

Reprint of the original 1876 edition, published in November 2024. 340 pages, text in German.

For those interested in the history of mathematics, trigonometry and the theory of quaternions.