1.1 The second part of Jan de Witt´s Elementa Curvarum Linearum is the essence of the whole work. The first part was merely a necessary preparation to Liber Secundus, which is referred to in the correspondence and in Part I as the tractatus (or compositio) locorum planorum et solidorum. This last text was delivered to Van Schooten at the beginning of 1658. In a letter to Jan de Witt dated 8 February 1658, Van Schooten expressed his great appreciation for this work and promised to study it carefully and to help in any way he could with the preparation for publication.

, , , ,
Sources and Studies in the History of Mathematics and Physical Sciences
Centrum Wiskunde & Informatica, Amsterdam (CWI), The Netherlands

Grootendorst, A.W, Aarts, J, Bakker, M, & Erné, R. (2010). Introduction. In Jan de Witt’s Elementa Curvarum Linearum (pp. 1–29). doi:10.1007/978-0-85729-142-4_1