Carl Jacobi nsIn thermodynamics, Carl Jacobi (1804-1851) was a German mathematician notable for his 1841 re-introduction of the curl d symbol (∂), for the partial differential, and for his definition of the force function as the negative of the potential energy. [1]

References
1. (a) Helmholtz, Hermann. (1882). “On the Thermodynamics of Chemical Processes” (force function, pg. 49), in: Physical Memoirs Selected and Translated from Foreign Sources, 1: 43-97. Physical Society of London, Taylor and Francis, 1888.
(b) Jacobi, Carl G.J. (1841). “On the Determinant Functions” (De determinantibus Functionalibus)”, in: Crelle’s Journal, Band 22, pp. 319-352, (pp. 393-438 of vol. 1 of the Collected Works).

Further reading
● James, Ioan M. (2002). Remarkable Mathematicians: from Euler to von Neumann (Carl Jacobi, pgs. 97). Cambridge University Press.

External links
Carl Gustav Jacob Jacobi – Wikipedia.

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