Inventio Theorematis Nobilissimi cujus consequential necessariò demonstrat limea circularem rectae Symmetram in Natura extare, & ideò illam huic aequlaent dari posse.
LONGOMONTANUS (SEVERIN), CHRISTEN SØRENSEN.
Hauniae (Copenhagen): Salamon Satore, 1643. First printing 4to. Original off print unbound. Collation: [12] p. with woodcut diagram. This is the first treatise by Longomontanus to defend his positions originally explained in his "Invnetio Quadraturae Circuli" in 1643. Very Good Unbound off print (Item ID: 0000224)
$1,800.00
Severin was a student of Tyco Brahe and continued Brahe's astronomical research after Brahe's death. Severin published his voluminous Astronomia dania (1622). "Regarded as the testament of Tycho Brahe, Severin's work was eagerly received and quickly won a place in seventeenth-century astronomical literature… Because Severin's career was virtually determined by his unique status as the literary heir of Tycho, it is impossible to form an independent estimate of his contemporary reputation. He was highly esteemed by Tycho for his skill at manipulationg observational data, and he may have played an important role in Tycho's remarkably research on the lunar theory… In addition to his astronomical interests, Severin also displayed the problem with a precise evaluation of p as equal to 78/43 v3." (DSB, XII, p. 332) (Only 2 copies in OCLC, Poggendorff I, 1494-5).