Unification Algorithm: Implementation and Applications

This post delves into the unification algorithm, a process for automatically solving equations between symbolic terms. It finds extensive use in logic programming and type inference. Starting with pattern matching, the post builds up to the concept of unification, providing a Python implementation based on Norvig's improved algorithm. The implementation includes data structure definitions, the core `unify` function, helper functions `unify_variable` and `occurs_check`, along with detailed code examples and execution results.