TY - BOOK AU - Aczel, J. AU - Dhombres, J TI - Functional equations in several variables; with application to mathematics, information theory and to the natural and social sciences U1 - 517.965 PY - 1989/// CY - Cambridge PB - Cambridge University Press KW - Encyclopedia KW - Encyclopaedia KW - Functional equations KW - Partial differential equations KW - advanced Calculus KW - Calculus KW - Mathematics KW - Number theory KW - Set theory KW - Group theory KW - Mathematical sciences ER -