Let t be a congruence on a distributive lattice with 0


Topic: Abstract Algebra

Let Θ be a congruence on a distributive lattice with 0. Define IΘ (subscript Θ) = O/Θ. Prove that IΘ (subscript Θ) is an ideal of D.

Show that for any ideal I of a distributive lattice D with O, that IΘI (subscript ΘI) = I. Give an example of a congruence Θ on a distributive lattice D with 0 where ΘIΘ (subscript IΘ) ≠ Θ.

Show that if B is a Boolean algebra, then for any congruence Θ of B that ΘIΘ = Θ (subscript IΘ).

Give an example of a complete distributive lattice that is not isomorphic to D(P), the collection of downsets of P, for any poset P and prove.

For a finite poset P prove that P is an order-isomorphism to the poset β(D*(P)) where D*(X) is the collection of downsets of X and β(D)={P| P is a prime ideal, I≠0, I≠D}.

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Algebra: Let t be a congruence on a distributive lattice with 0
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