Exercise 18 Any subset E CS is contained in UsEE(s). Show that E is a down-set if and only if E = U(s]. sEE
Exercise 18 Any subset E CS is contained in UsEE(s). Show that E is a down-set if and only if E = U(s]. sEE
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![Exercise 18 Any subset E CS is contained in UsEE(s). Show that E is a
down-set if and only if
E = U(s].
sEE](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7af811dd-c68d-4d40-8a28-aab91cbdb74c%2F326f2fbc-9f29-49fe-b94d-20af60cf8333%2F0f58fq_processed.png&w=3840&q=75)
Transcribed Image Text:Exercise 18 Any subset E CS is contained in UsEE(s). Show that E is a
down-set if and only if
E = U(s].
sEE
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