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Finding nonclassical counterexamples

Here is a random argument! (Premises above the line; conclusion below it)

  • ⊥
  • ¬(((c → i) ∨ (x ∧ x)) → j)
  • ---------------
  • ¬(m ∧ ⊥)

Give a counterexample to this argument in the K3 matrix, if there is one!

Note that the matrix can change from one argument to the next, so stay alert!

c

i

j

m

x