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Published 2005 Revised 2018
Natural numbers | 1 | 2 | 3 | ... |
Integers | 1 | 2 | 3 | ... |
Natural numbers | 1 | 2 | 3 | 4 | 5 | 6 | 7 | ... |
Integers | 0 | -1 | 1 | -2 | 2 | -3 | 3 | ... |
$\frac{1}{1}$ | $\frac{1}{2}$ | $\frac{1}{3}$ | $\frac{1}{4}$ | $\frac{1}{5}$ | $\frac{1}{6}$ | ... |
$\frac{2}{1}$ | $\frac{2}{2}$ | $\frac{2}{3}$ | $\frac{2}{4}$ | $\frac{2}{5}$ | ... | |
$\frac{3}{1}$ | $\frac{3}{2}$ | $\frac{3}{3}$ | $\frac{3}{4}$ | ... | ||
$\frac{4}{1}$ | $\frac{4}{2}$ | $\frac{4}{3}$ | ... | |||
$\frac{5}{1}$ | $\frac{5}{1}$ | ... | ||||
$\frac{6}{1}$ | ... | |||||
... |
Natural numbers | 1 | 2 | 3 | 4 | 5 | 6 | 7 | ... |
Rationals | 0 | $\frac{1}{1}$ | $-\frac{1}{1}$ | $\frac{1}{2}$ | $-\frac{1}{2}$ | $\frac{2}{1}$ | $-\frac{2}{1}$ | ... |