cdlemg33b

	Ref	Expression
Hypotheses	cdlemg12.l	$⊢ \underset{˙}{\leq} = \leq_{K}$
	cdlemg12.j	$⊢ \underset{˙}{\lor} = join (K)$
	cdlemg12.m	$⊢ \underset{˙}{\land} = meet (K)$
	cdlemg12.a	$⊢ A = Atoms (K)$
	cdlemg12.h	$⊢ H = LHyp (K)$
	cdlemg12.t	$⊢ T = LTrn (K) (W)$
	cdlemg12b.r	$⊢ R = trL (K) (W)$
	cdlemg31.n	$⊢ N = (P \underset{˙}{\lor} v) \underset{˙}{\land} (Q \underset{˙}{\lor} R (F))$
	cdlemg33.o	$⊢ O = (P \underset{˙}{\lor} v) \underset{˙}{\land} (Q \underset{˙}{\lor} R (G))$
Assertion	cdlemg33b	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to \exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$

Proof

Step	Hyp	Ref	Expression
1		cdlemg12.l	$⊢ \underset{˙}{\leq} = \leq_{K}$
2		cdlemg12.j	$⊢ \underset{˙}{\lor} = join (K)$
3		cdlemg12.m	$⊢ \underset{˙}{\land} = meet (K)$
4		cdlemg12.a	$⊢ A = Atoms (K)$
5		cdlemg12.h	$⊢ H = LHyp (K)$
6		cdlemg12.t	$⊢ T = LTrn (K) (W)$
7		cdlemg12b.r	$⊢ R = trL (K) (W)$
8		cdlemg31.n	$⊢ N = (P \underset{˙}{\lor} v) \underset{˙}{\land} (Q \underset{˙}{\lor} R (F))$
9		cdlemg33.o	$⊢ O = (P \underset{˙}{\lor} v) \underset{˙}{\land} (Q \underset{˙}{\lor} R (G))$
10		df-3an	$⊢ (z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)) \leftrightarrow ((z \neq N \land z \neq O) \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v))$
11		neeq2	$⊢ N = O \to (z \neq N \leftrightarrow z \neq O)$
12	11	anbi2d	$⊢ N = O \to ((z \neq N \land z \neq N) \leftrightarrow (z \neq N \land z \neq O))$
13		anidm	$⊢ (z \neq N \land z \neq N) \leftrightarrow z \neq N$
14	12 13	bitr3di	$⊢ N = O \to ((z \neq N \land z \neq O) \leftrightarrow z \neq N)$
15	14	anbi1d	$⊢ N = O \to (((z \neq N \land z \neq O) \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)) \leftrightarrow (z \neq N \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$
16	10 15	syl5bb	$⊢ N = O \to ((z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)) \leftrightarrow (z \neq N \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$
17	16	anbi2d	$⊢ N = O \to ((\neg z \underset{˙}{\leq} W \land (z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v))) \leftrightarrow (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v))))$
18	17	rexbidv	$⊢ N = O \to (\exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v))) \leftrightarrow \exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v))))$
19		simpl1	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to ((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W))$
20		simpl2	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T))$
21		simpl31	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to P \neq Q$
22		simpr	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to N \neq O$
23	21 22	jca	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to (P \neq Q \land N \neq O)$
24		simpl32	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to v \neq R (F)$
25		simpl33	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r)$
26	1 2 3 4 5 6 7 8 9	cdlemg33a	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land ((P \neq Q \land N \neq O) \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to \exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$
27	19 20 23 24 25 26	syl113anc	$⊢ ((((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \land N \neq O) \to \exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$
28		simp21	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to (v \in A \land v \underset{˙}{\leq} W)$
29		simp22l	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to N \in A$
30		simp23l	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to F \in T$
31	28 29 30	3jca	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to ((v \in A \land v \underset{˙}{\leq} W) \land N \in A \land F \in T)$
32	1 2 3 4 5 6 7 8	cdlemg33b0	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land N \in A \land F \in T) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to \exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$
33	31 32	syld3an2	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to \exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$
34	18 27 33	pm2.61ne	$⊢ (((K \in HL \land W \in H) \land (P \in A \land \neg P \underset{˙}{\leq} W) \land (Q \in A \land \neg Q \underset{˙}{\leq} W)) \land ((v \in A \land v \underset{˙}{\leq} W) \land (N \in A \land O \in A) \land (F \in T \land G \in T)) \land (P \neq Q \land v \neq R (F) \land \exists r \in A (\neg r \underset{˙}{\leq} W \land P \underset{˙}{\lor} r = Q \underset{˙}{\lor} r))) \to \exists z \in A (\neg z \underset{˙}{\leq} W \land (z \neq N \land z \neq O \land z \underset{˙}{\leq} (P \underset{˙}{\lor} v)))$

Metamath Proof Explorer

Theorem cdlemg33b

Proof