vi. if A is regular, then {xy : x € A, y # A} is regular. vii. If A is regular and B is non-regular, then AB is non-regular. viii. If A is regular and B is non-regular, then AUB is non-regular. ix. If A and B are both non-regular, then An B is non-regular. x. If A is non-regular, then A* is non-regular.

vi. if A is regular, then {xy : x € A, y # A} is regular. vii. If A is regular and B is non-regular, then AB is non-regular. viii. If A is regular and B is non-regular, then AUB is non-regular. ix. If A and B are both non-regular, then An B is non-regular. x. If A is non-regular, then A* is non-regular.

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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