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Hilbert
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Objects  a, b, c
Functions  f, g

1 p => (q => r) Premise 2 (p => (q => r)) => (q => (p => (q => r))) Implication Creation Schema 3 q => (p => (q => r)) Implication Elimination 2 1 4 (p => (q => r)) => ((p => q) => (p => r)) Implication Distribution Schema 5 ((p => (q => r)) => ((p => q) => (p => r))) => (q => ((p => (q => r)) => ((p => q) => (p => r)))) Implication Creation Schema 6 q => ((p => (q => r)) => ((p => q) => (p => r))) Implication Elimination 5 4 7 q => ((p => q) => (p => r)) Conditional Deduction 3 6 8 (q => ((p => q) => (p => r))) => ((q => (p => q)) => (q => (p => r))) Implication Distribution Schema 9 (q => (p => q)) => (q => (p => r)) Implication Elimination 8 7 10 q => (p => q) Implication Creation Schema 11 q => (p => r) Implication Elimination 9 10