Find the minimal elements

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Reference no: EM131574691

Question: Answer these questions for the poset ({{1}, {2}, {4}, {1, 2}, {1, 4}, {2, 4}, {3, 4}, {1, 3, 4}, {2, 3, 4}}, ⊆).

a) Find the maximal elements

b) Find the minimal elements.

c) Is there a greatest element?

d) Is there a least element?

e) Find all upper bounds of {{2},{4}}.

f ) Find the least upper bound of {{2},{4}}, if it exists.

g) Find all lower bounds of {{1, 3, 4},{2, 3, 4}}.

h) Find the greatest lower bound of {{1, 3, 4}, {2, 3, 4}}, if it exists.

Reference no: EM131574691

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