You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

7 lines
152 B

  1. This sequent is provable.
  2. \begin{logicproof}{2}
  3. p \land (q \land r) & prem. \\
  4. q \land r & $\land$e2 1 \\
  5. q & $\land$e1 2
  6. \end{logicproof}