Let A be a non-empty set, ≃ ⊆ A × A an equivalence relation, and ⪯ ⊆ A × A a partial order, both defined on A. Consider the quotient set A/≃ and define the following relation ≪ ⊆ (A/≃) × (A/≃): (S1, S2) ∈ ≪ if and only if there exists an element a ∈ S1 such that for every b ∈ S2, a ⪯ b holds true. We are given that ≪r is a partial order over A/ ≃ where ≪r is the reflex clause of ≪: Question: Is it true that A has a minimal element according to ⪯ if and only if A/≃ has a minimal element according to ≪r? Prove your statement.
Let A be a non-empty set, ≃ ⊆ A × A an equivalence relation, and ⪯ ⊆ A × A a partial order, both defined on A. Consider the quotient set A/≃ and define the following relation ≪ ⊆ (A/≃) × (A/≃): (S1, S2) ∈ ≪ if and only if there exists an element a ∈ S1 such that for every b ∈ S2, a ⪯ b holds true. We are given that ≪r is a partial order over A/ ≃ where ≪r is the reflex clause of ≪: Question: Is it true that A has a minimal element according to ⪯ if and only if A/≃ has a minimal element according to ≪r? Prove your statement.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question
Let A be a non-empty set, ≃ ⊆ A × A an equivalence relation, and ⪯ ⊆ A × A a partial order, both defined on A. Consider the quotient set A/≃ and define the following relation ≪ ⊆ (A/≃) × (A/≃):
(S1, S2) ∈ ≪ if and only if there exists an element a ∈ S1 such that for every b ∈ S2, a ⪯ b holds true.
We are given that ≪r is a partial order over A/ ≃ where ≪r is the reflex clause of ≪:
Question: Is it true that A has a minimal element according to ⪯ if and only if A/≃ has a minimal element according to ≪r? Prove your statement.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,