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Tuple Calculus Difference between 'for all' and 'such that'

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Book(year_of_publication, Title, Acc_no(primary key))

then what does the following expression mean? (does it even mean anything)

s={ t | ∀ u∈Book(t[year_of_publication] = u[year_of_publication] ∧ t[title] = u[title] )}
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