Infimums and Supremums

![lesson](lesson-infimum-supremum-01.png) ![lesson](lesson-infimum-supremum-02.png) ![lesson](lesson-infimum-supremum-03.png) ![lesson](lesson-infimum-supremum-04.png) ![lesson](lesson-infimum-supremum-05.png) ![graphic](graphic-inf-sup-2-fraction.gif) ![lesson](lesson-infimum-supremum-06.png) ![lesson](lesson-infimum-supremum-07.png)
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