Sol7 - sol7 PDF

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                                        !"#$%$"#$"&$ ' (             )       "%          * !  +  +             ,    +       "%    &-!./$≤ !"#$%$"#$"&$     &-!./$            -   !"#$%"#$"&$          0        1           !       2       3  !"#$%$"#$"&$          +   4 54        "%        * 6    ,   *     +  ≤        +       "%    78≤   − !%        78       − !%          9 :     , ,   ∨ ¬  ∨            −     ≥      !%  ++     :     78   +  1  !%           55 7  7$%83!!;"∈"%&  &*        +  ,     0    +  +        −     7$%83!!;"∈"%&   7/+>   ⊆   ∈            $:+          ∈ − 

   −        :           ,  *+  {  } ∈     9   −  2   { ∈  −   } ∈  



    





 ∈−

∈−{}

⇒ 



  



 −   

∈

  

∈−

!  +   ⊆  +       7/...