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extended_real_number_line [2013/08/04 16:44] nikolaj |
extended_real_number_line [2013/08/16 15:27] nikolaj |
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===== Extended real number line ===== | ===== Extended real number line ===== | ||
==== Definition ==== | ==== Definition ==== | ||
- | | @#55EE55: $ \overline{\mathbb R} \equiv \mathbb R\cup{-\infty,\infty} $ | | + | | @#55EE55: $ \overline{\mathbb R} \equiv \mathbb R\cup\{-\infty,\infty\} $ | |
>todo: model $-\infty$ and $\infty$ | >todo: model $-\infty$ and $\infty$ | ||
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==== Context ==== | ==== Context ==== | ||
Set | Set | ||
- | === Parents === | + | === Requirements === |
[[Real number]] | [[Real number]] |