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.

9 lines
188 B

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