6. Prove that the set of all maximum size antichains of a poset P, forms a distributive lattice under "<" relation, where the relation between two maximum size antichains A and B is defined as follows: ABVA: 3y € B: x ≤py. Reminders: x ≤py means x ≤y in the poset P. . Remember to show that <, the relation between two maximum sized antichains as above, satisfies the conditions required to be a valid partial ordering relation.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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6.
Prove that the set of all maximum size antichains of a poset P, forms a distributive
lattice under "<" relation, where the relation between two maximum size antichains A and
B is defined as follows: AB VEA: Eye B:x≤py.
Reminders:
x <py means x ≤y in the poset P.
Remember to show that ≤, the relation between two maximum sized antichains as above,
satisfies the conditions required to be a valid partial ordering relation.
Transcribed Image Text:6. Prove that the set of all maximum size antichains of a poset P, forms a distributive lattice under "<" relation, where the relation between two maximum size antichains A and B is defined as follows: AB VEA: Eye B:x≤py. Reminders: x <py means x ≤y in the poset P. Remember to show that ≤, the relation between two maximum sized antichains as above, satisfies the conditions required to be a valid partial ordering relation.
Expert Solution
Step 1

Given:

A poset P and a relation "" between two maximum antichains A and B, defined by: ABxA:yB:xPy.

 

To show:

The set of all maximum size antichains of P forms a distributive lattice.

 

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