Definition:Unlimited Register Machine/Operation/Stage

Definition

The stage of computation (or just stage) of a URM program is the count of how many instructions have been executed.

Thus each stage corresponds to the processing of one instruction.

Also see

• Results about unlimited register machines can be found here.

Sources

• 1963: John C. Shepherdson and H.E. Sturgis: Computability of Recursive Functions (J. ACM Vol. 10, no. 2: pp. 217 – 255)

• 1980: N.J. Cutland: Computability: An Introduction to Recursive Function Theory