State whether the following statements are true or false. If false, give a counterexample or state why. - a. VL1, L2(L1 = Lz iff L¡ = L;) • b. (ØUØ") n (ouø") = Ø . c. VL(|L] = |N| → |L| < |N]) • d. VL,,L2((L,L2)* = L¿L;) • e. VL,, L2((L, UL2)* = L¡ U L;) • f. VL(ØL+ = L') g. VL(L'Ø = L')
State whether the following statements are true or false. If false, give a counterexample or state why. - a. VL1, L2(L1 = Lz iff L¡ = L;) • b. (ØUØ") n (ouø") = Ø . c. VL(|L] = |N| → |L| < |N]) • d. VL,,L2((L,L2)* = L¿L;) • e. VL,, L2((L, UL2)* = L¡ U L;) • f. VL(ØL+ = L') g. VL(L'Ø = L')
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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