Differences
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solution_set [2016/05/19 20:56] nikolaj |
solution_set [2016/05/19 20:58] nikolaj |
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| - | This is just $f^{-1}(\{y_0\})$. | + | This is also written $f^{-1}(\{y_0\})$, with $f^{-1}:{\mathcal P}Y\to{\mathcal P}X$. |
| === Reference === | === Reference === | ||
