KRAFT, JENS.

Methode at bevise, hvorledes man i alle Tilfælde kand bestemme den ene Ubekiendte ved en u-endelig Følge af Terminis, som gives ved den anden, i de Algebraiske Liigheder, som indeholde to Ubekiendte.

(Copenhagen, 1751).

4to. In recently blue paper covered card board binding with white paper-label title-label to front board. Previous owner's name to pasted down front end-paper. Without wrappers as issued in "Videnskabernes Selskabs Skrifter", a nice and clean copy. Pp. 323-354.

First edition of Kraft’s paper on algebra and infinite series, placing him among the most significant Danish mathematicians of his time. The work presents a method for determining an unknown variable in an algebraic equation using an infinite sequence of terms relating to series expansion techniques later formalized in Puiseux series, which play a role in modern algebraic geometry and analysis.

Order-nr.: 61841