Friday, 22 January 2021

A Concise Introduction to Logic, Patrick J. Hurley, Wadsworth, 2006, 9th ed,. 8.7, II, 18, p. 447

 

1.     (x)[Ex ⊃ (Hp • x = e)]

2.     (∃x)(Ex • x = p)

∴ He

3.     Em • m = p

4.     Em ⊃ (Hp • m = e)

5.     Em

6.     Hp • m = e

7.     m = e • Hp

8.     m = e

9.     m = p • Em

10. m = p

11. p = m

12. p = e

13. Hp

14. He

 

 

 

2 EI

1 UI

3 Simp

4,5 MP

6 Com

7 Simp

3 Com

9 Simp

10 Id

10,11 Id

6 Simp

12,13 Id

No comments:

Post a Comment