A = {a, ab, aab},A set of strings over the alphabet (a, b). For strings, we have an interesting notation to define the universalset U in this context. We take U defined by the Kleene closure (*) of the alphabet:U = {a,b}* = {a,b}¹ = {a,b}° U {a,b}¹ U {a,b}² U...izoAnswer the following questions.a) What is the shortest string in the universe for A?b) How many strings are contained in A?c) Write the contents of {a,b}⁰ U {a,b}¹ U {a,b}² in roster notation.d) Write the contents of A x A in roster notation. Note that when pairing up the strings, you areconcatenating the strings. Your final answer should not contain any pairs, only strings, and shouldnot contain any duplicates. To compute this, you can first compute the Cartesian product as usual,followed by removing the parentheses and commas.

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A = {a, ab, aab}, A set of strings over the alphabet (a, b). For strings, we have an interesting notation to define the universal set U in this context. We take U defined by the Kleene closure (*) of the alphabet: U = {a,b}* = {a,b)}¹ = {a,b}° U {a,b}¹ U {a,b}² U... (20 Answer the following questions. a) What is the shortest string in the universe for A? b) How many strings are contained in A? c) Write the contents of {a, b}° U {a,b}¹ U {a, b}² in roster notation.

A = {a, ab, aab}, A set of strings over the alphabet (a, b). For strings, we have an interesting notation to define the universal set U in this context. We take U defined by the Kleene closure () of the alphabet: U = {a,b} = {a,b)}¹ = {a,b}° U {a,b}¹ U {a,b}² U... (20 Answer the following questions. a) What is the shortest string in the universe for A? b) How many strings are contained in A? c) Write the contents of {a, b}° U {a,b}¹ U {a, b}² in roster notation.

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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