| 1. | Here the maximum of the empty set is taken to be zero.
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| 2. | LPBoost constructs f by starting with an empty set of weak classifiers.
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| 3. | The empty set is an identity element for the operation of union.
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| 4. | Unlike a ball, even a large sphere may be an empty set.
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| 5. | Some ZF axiomatizations include an axiom asserting that the empty set exists.
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| 6. | Since the product is empty the only such subset is the empty set.
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| 7. | :: You can say whatever you like about members of the empty set.
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| 8. | Likewise conveying the distinction between an empty set and no set.
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| 9. | Likewise, the join of the empty set yields the least element.
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| 10. | We include the empty set in both the labelled and the unlabelled case.
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