| 1. | Cantor developed important concepts in topology and their relation to cardinality.
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| 2. | But any model of the extended theory has cardinality at least ?
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| 3. | The cardinality of any infinite ordinal number is an aleph number.
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| 4. | On the edge of each line, arrows indicate the cardinality.
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| 5. | Two sets of the same order type have the same cardinality.
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| 6. | Also, for more of this see cardinality and cardinal number.
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| 7. | In particular, is in, where is the cardinality of.
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| 8. | In 1878, Cantor used them to define and compare cardinalities.
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| 9. | On the entry nodes one analyzes the cardinalities of the constraints.
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| 10. | However, not all infinite sets have the same cardinality.
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