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(a) (b) (c) (x) (y) (Ez) ((Ayzxv Bzzy) v (Fxac Hzauzu)) (Ex) (Ey) Hyabwa(z) (Fzvhky v Hxyyx) (z) (Ex) (y) (Axyzyyw v Bxyxzavz)

(a) (b) (c) (x) (y) (Ez) ((Ayzxv Bzzy) v (Fxac Hzauzu)) (Ex) (Ey) Hyabwa(z) (Fzvhky v Hxyyx) (z) (Ex) (y) (Axyzyyw v Bxyxzavz)

Database System Concepts
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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For the following wff, indicate which variables are free and which are bound (you can use ‘F’ for deee and ‘B’ for bound.) Either (i) draw a vertical line underneath each variable with the letters ‘F’ or ‘B’ at the bottom of each vertical line or (ii) color bound variables red and free variables green.
2. For the following wffs, indicate which variables are free and which are bound (you can use 'F' for free and 'B' for bound.) Either (i) draw a vertical line underneath each variable with the letters 'F' or 'B' at the bottom of each vertical line or (ii) color bound variables red and free variables green. Make sure you know which symbols are used for variables. Not every symbol in the language of predicate logic is used for variables. The reading (Scope, binding, and quantifier expansions) lists the symbols that are used for variables and the symbols that used for the names of objects (i.e., individual constants). Names of objects are not names of variables. The free/bound distinction only applies to variables. It does not apply to individual constants (i.e., names of objects) (a) (b) (c) (x) (y) (Ez) ((Ayzxv Bzzy) v (Fxac Hzauzu)) (Ex) (Ey) Hyabwa(z) (Fzvhky v Hxyyx) (z) (Ex) (y) (Axyzyyw v Bxyxzavz)
Transcribed Image Text:2. For the following wffs, indicate which variables are free and which are bound (you can use 'F' for free and 'B' for bound.) Either (i) draw a vertical line underneath each variable with the letters 'F' or 'B' at the bottom of each vertical line or (ii) color bound variables red and free variables green. Make sure you know which symbols are used for variables. Not every symbol in the language of predicate logic is used for variables. The reading (Scope, binding, and quantifier expansions) lists the symbols that are used for variables and the symbols that used for the names of objects (i.e., individual constants). Names of objects are not names of variables. The free/bound distinction only applies to variables. It does not apply to individual constants (i.e., names of objects) (a) (b) (c) (x) (y) (Ez) ((Ayzxv Bzzy) v (Fxac Hzauzu)) (Ex) (Ey) Hyabwa(z) (Fzvhky v Hxyyx) (z) (Ex) (y) (Axyzyyw v Bxyxzavz)
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