Example: Natural Numbers
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Presentation: Decimal numerals:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, É
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Repesentation
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Binary:
0000, 0001, 0010, 0011, 0100, 0101, 0110, É
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Abstraction
: Peano axioms
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