L1={U€E•[u ends with aa}. 12 = {u €I•|u ends and begins with different letters }. L3 = {u €E•|U contains abba}. L4 = {u €X•[u is of the form anbamfor n,m>0}. Given the above languages: (a) Use the set operators 'union' and 'complement' to describe L5 = L1 n L2. (b) Prove that L5 is regular.

L1={U€E•[u ends with aa}. 12 = {u €I•|u ends and begins with different letters }. L3 = {u €E•|U contains abba}. L4 = {u €X•[u is of the form anbamfor n,m>0}. Given the above languages: (a) Use the set operators 'union' and 'complement' to describe L5 = L1 n L2. (b) Prove that L5 is regular.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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