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Published byMorgan Morris Modified over 9 years ago
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1.(p q) 2. (r s) 3. p v r q v s 4. (p q) (r s) conj. 1,2 5. q v sC.D. 3,4
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1. p q 2. q s 3. s m 4. p m 5.qm.p. 1,4 6. s m.p. 2,5 7. mm.p. 3,6
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1. p q 2. q r p ( p r) 3. p r H.S. 1,2 4. p ( p r) Abs. 3
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1. p q 2. q m 3. m k 4. k s 5. ~s v n 6. ~n ~p v (n k) 7. ~s d.s. 5, 6 8. ~k m.t. 4, 7 9. ~m m.t. 3, 8 10. ~qm.t. 2, 9 11. ~pm.t. 1, 10 12. ~p v (n k) add 11
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1. j k 2. k v m 3. (m ~j) (~q k) 4. ~k ~q 5. m d.s. 2, 4 6. ~j m.t. 1, 4 7. m ~j conj. 5, 6 8. ~q km.p. 3, 7 9. ~qSimp. 8
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1. a b 2. b c 3. k m 4. a v k 5. ~c m 6. a c h.s. 1, 2 8. c v mc.d. 7,4 9. m d.s. 8, 5 7. (a c) (k m ) Conj. 6, 3
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1. a b 2. a v (c d) 3. ~b ~e c 4. ~b Simp. 3 5. ~a m.t. 4, 1 6. c d d.s. 2,5 7. cSimp. 6
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1. w x 2. (w x) y 3. (w y) z w (w z) 5. w (w x ) abs. 1 6. w y h.s 5,2 7. w (w y) abs. 6 8. w z h.s. 7,3 9. w (w z) Abs. 8
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1. (n v o) p 2. (p v q) r 3. q v n 4. ~q r 5. n d.s. 3,4 6. n v o Add. 5 7. p m.p. 6, 1 8. p v qAdd. 7 9. rm.p. 2,8
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Now we add the Equivalence Rules
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1. ~p v q 2. ~(q v m) ~p 3. p q Material Implication 1 4. ~q ~m De Morgen’s 2 5. ~q Simp. 4 6. ~pM.T. 3, 5
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1. (p q) r 2. ~p v q 3. (z p) (r v s) v (z p) 4. p q Material Implication 2 5. rm.p. 4, 5 6. r v sAdd. 5 7. (r v s) v (z p) add. 6
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1. (h i) (j k) 2. (i v k) L 3. ~ L ~(h v j) 4. ~(i v k)m.t. 2, 3 5. (h i) Simp. 1 6. ~i ~k DeMorgan’s 4 7. ~i Simp. 6 8. ~h m.t. 7, 5 9. ~k ~i Commutation 6 10. ~k Simp. 9 11. (j k) (h i) Commutation 1 12. (j k) Simp. 11 13. ~j m.t. 10, 12 14. ~j ~h Conj. 13, 8 15. ~h ~j Comm. 14 16. ~(h v j) De Morgan’s 15
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1. (k v p) v x 2. k ~o 3. (p v x) ~l ~(o l) 4. k v (p v x)Association 1 5. ~o v ~l C.D. 4,2,3 6. ~(o l) De Morgan’s 5
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1. ~(~p q) 2. ~q r 3. p ~s r v ~s 4. ~(~p ~~q) Double negation 1 5. ~~(p v ~q) DeMorgan’s 4 6. p v ~q d.n. 5 7. ~s v r C.D. 2,3,6 8. r v ~s Commutation 7
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1. ~b 2. ~(c b) c 3. ~ g ~c g 4. ~b v ~cAdd. 1 5. ~c v ~b Comm. 4 6. ~(c b) DeMorgan’s 5 7. c m.p. 2, 6 8. c g Contraposition (Transposition) 3 9. g m.p. 7, 8
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1. p q 2. ~(p v m) ~(z k) 3. ~m 4. ~q ~ z v ~ k
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1. b e 2. ~m v g 3. (b c) d 4. (d c) m e g
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