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Finding nonclassical counterexamples

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

  • (b → m) ∨ (a → (f → d))
  • ¬((l → d) → ⊥)
  • ---------------
  • d ∧ m

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

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

a

b

d

f

l

m