behavioral equivalence

Behavioral equivalence is a way to determine if two systems, such as computer programs or processes, behave in essentially the same way from an outside perspective. It means that, despite possible differences in how they are built or operate internally, they respond to inputs and produce outputs in the same manner, making their observable behavior indistinguishable. This concept helps in verifying that different implementations meet the same requirements or perform the same function, ensuring consistency in systems without needing to examine every internal detail.