| 41. | The latter formula means the sum of all natural numbers from 1 to 100.
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| 42. | Similarly, most subsets of the natural numbers are not computable.
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| 43. | The universe of the model will be the natural numbers.
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| 44. | Natural numbers work well for representing everyday countable objects.
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| 45. | Naturally, this 2-adic integer has no corresponding natural number.
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| 46. | The digits are natural numbers between 0 and, inclusive.
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| 47. | The natural numbers are thus ordinals by this definition.
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| 48. | The natural numbers form a subset of the integers.
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| 49. | Thus the below must simply denote a natural number.
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| 50. | Consider again the two equivalent structures for natural numbers.
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