"This book, a result of nineteen years' lectures on the calculus of finite differences, probability, and mathematical statistics in the Budapest University of Technical and Economical Sciences ... has ...
The FD= and FDHESSIAN= options specify the use of finite difference approximations of the derivatives. The FD= option specifies that all derivatives are approximated using function evaluations, and ...
OUR notices of the former sections will be found in vol. xxii. (p. 582) and vol. xxvi. (p. 197). These sections are occupied with the Calculus of Variations (pp. 441 to 459), Differential Equations ...