Let R be the relation on R defined by R= {(x, y) E R × R | x² + y² = 4 or x = y²}. Answer each of the following parts by giving either a proof or a counterexample.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 24E: For any relation on the nonempty set, the inverse of is the relation defined by if and only if ....
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Let R be the relation on R defined by
R= {(x, y) E R × R | x² + y²
4 or x = y}.
Answer each of the following parts by giving
either a proof or a counterexample.
Is R a function from R to R?
Is R antisymmetric? Is R symmetric?
Determine whether for x, y E R the statement
Vx 3y (xRy) is true or false.
Determine whether for x, y E R the statement
3y Va (xRy) is true or false.
Transcribed Image Text:Let R be the relation on R defined by R= {(x, y) E R × R | x² + y² 4 or x = y}. Answer each of the following parts by giving either a proof or a counterexample. Is R a function from R to R? Is R antisymmetric? Is R symmetric? Determine whether for x, y E R the statement Vx 3y (xRy) is true or false. Determine whether for x, y E R the statement 3y Va (xRy) is true or false.
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