1. (x)(Fx ⊃ x = e)
2. (∃x)(Fx • x = a)
∴ a = e
3. Fm • m = a
4. Fm ⊃ m = e
5. Fm
6. m = e
7. e = m
8. m = a • Fm
9. m = a
10. e = a
11. a = e
2 EI
1 UI
3 Simp
4,5 MP
6 Id
3 Com
8 Simp
6,9 Id
10 Id
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