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Revision as of 17:56, 12 April 2009
, 17:56, 12 April 2009→Commentary Note 11.6
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So, ''E''<sub>3</sub> is a pre-function ''e''<sub>3</sub> : ''X'' ~> ''Y'', and ''E''<sub>4</sub> is a pre-function ''e''<sub>4</sub> : ''X'' <~ ''Y''.
So <math>E_3\!</math> is a pre-function <math>e_3 : X \rightharpoonup Y,</math> and <math>E_4\!</math> is a pre-function <math>e_4 : X \leftharpoonup Y.</math>
===Commentary Note 11.7===
===Commentary Note 11.7===
