Es sei Γ 1 = { p ∧ q → r } {\displaystyle {}\Gamma _{1}=\{p\wedge q\rightarrow r\}} und Γ 2 = { p → ( q → r ) } {\displaystyle {}\Gamma _{2}=\{p\rightarrow (q\rightarrow r)\}} . Zeige
