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m Ordered the number types to be consistent with other wiki descriptions, e.g. the 2nd diagram on https://en.wikipedia.org/wiki/Natural_number |
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:{{math|'''∅'''}} – [[empty set]] (also <math>\emptyset</math> or <math>\varnothing</math> or {{math|{}}} are common)
:{{math|'''Z'''}} – [[integer]]s (from ''Zahl'', German for ''[[number]]'').▼
:{{math|'''N'''}} – [[natural number]]s
▲:{{math|'''Z'''}} – [[integer]]s (from ''Zahl'', German for ''[[number]]'').
:{{math|'''Q'''}} – [[rational number]]s (from ''[[quotient]]'')
:{{math|'''R'''}} – [[real number]]s
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