Homework Assignment 6
                               CS 389r
                         Unique Number: 53540
                             Spring, 2026

                       Given:  February 24, 2026
                          Due:  March 5, 2026


Please read and understand the ACL2 Documentation topics:

  R-AND-I-PEANO-ARITHMETIC
  R-AND-I-ACL2-ARITHMETIC
  R-AND-I-INADEQUACIES-OF-STRUCTURAL-RECURSION
  R-AND-I-ORDINALS
  R-AND-I-DEFINITIONAL-PRINCIPLE

Reminder: Starting with this assignment, you are free to use the ACL2
Theorem Prover and/or the ACL2 Proof Builder when completing your
assignments.

This assignment asks that you use ACL2 to perform mechanical proofs of
problems 65 -- 73 and problems 78 -- 80.