A Language for Writing Problem-solving Programs
J. F. Rulifson, Richard J. Waldinger, Jan Antonius Cornelius Derksen · IFIP Congress · 1971
Abstract : This paper describes a language for constructing problem-solving programs. The language can manipulate several data structures, including ordered and unordered sets. Pattern matching facilities may be used in various ways, including the binding of variables. Implicit backtracking facilitates the compact representation of search procedures. Expressions are treated analogously to atoms in LISP. A context device is used to implement variable bindings, to effect conditional proofs, and to solve the frame problem in robot planning.