Metamath Proof Explorer

Theorem cdlemkoatnle

Description: Utility lemma. (Contributed by NM, 2-Jul-2013)

		Ref	Expression
	Hypotheses	cdlemk1.b	$⊢ B = {Base}_{K}$
		cdlemk1.l	$⊢ \underset{˙}{\leq} = \leq_{K}$
		cdlemk1.j	$⊢ \underset{˙}{\lor} = join (K)$
		cdlemk1.m	$⊢ \underset{˙}{\land} = meet (K)$
		cdlemk1.a	$⊢ A = Atoms (K)$
		cdlemk1.h	$⊢ H = LHyp (K)$
		cdlemk1.t	$⊢ T = LTrn (K) (W)$
		cdlemk1.r	$⊢ R = trL (K) (W)$
		cdlemk1.s	$⊢ S = (f \in T ⟼ (ι i \in T \| i (P) = (P \underset{˙}{\lor} R (f)) \underset{˙}{\land} (N (P) \underset{˙}{\lor} R (f \circ F^{-1}))))$
		cdlemk1.o	$⊢ O = S (D)$
	Assertion	cdlemkoatnle	$⊢ (((K \in HL \land W \in H) \land F \in T \land D \in T) \land (N \in T \land (P \in A \land \neg P \underset{˙}{\leq} W) \land R (F) = R (N)) \land (F \neq {I ↾}_{B} \land D \neq {I ↾}_{B} \land R (D) \neq R (F))) \to (O (P) \in A \land \neg O (P) \underset{˙}{\leq} W)$

Proof

Step	Hyp	Ref	Expression
1		cdlemk1.b	$⊢ B = {Base}_{K}$
2		cdlemk1.l	$⊢ \underset{˙}{\leq} = \leq_{K}$
3		cdlemk1.j	$⊢ \underset{˙}{\lor} = join (K)$
4		cdlemk1.m	$⊢ \underset{˙}{\land} = meet (K)$
5		cdlemk1.a	$⊢ A = Atoms (K)$
6		cdlemk1.h	$⊢ H = LHyp (K)$
7		cdlemk1.t	$⊢ T = LTrn (K) (W)$
8		cdlemk1.r	$⊢ R = trL (K) (W)$
9		cdlemk1.s	$⊢ S = (f \in T ⟼ (ι i \in T \| i (P) = (P \underset{˙}{\lor} R (f)) \underset{˙}{\land} (N (P) \underset{˙}{\lor} R (f \circ F^{-1}))))$
10		cdlemk1.o	$⊢ O = S (D)$
11		simp11	$⊢ (((K \in HL \land W \in H) \land F \in T \land D \in T) \land (N \in T \land (P \in A \land \neg P \underset{˙}{\leq} W) \land R (F) = R (N)) \land (F \neq {I ↾}_{B} \land D \neq {I ↾}_{B} \land R (D) \neq R (F))) \to (K \in HL \land W \in H)$
12	1 2 3 5 6 7 8 4 9	cdlemksel	$⊢ (((K \in HL \land W \in H) \land F \in T \land D \in T) \land (N \in T \land (P \in A \land \neg P \underset{˙}{\leq} W) \land R (F) = R (N)) \land (F \neq {I ↾}_{B} \land D \neq {I ↾}_{B} \land R (D) \neq R (F))) \to S (D) \in T$
13	10 12	eqeltrid	$⊢ (((K \in HL \land W \in H) \land F \in T \land D \in T) \land (N \in T \land (P \in A \land \neg P \underset{˙}{\leq} W) \land R (F) = R (N)) \land (F \neq {I ↾}_{B} \land D \neq {I ↾}_{B} \land R (D) \neq R (F))) \to O \in T$
14		simp22	$⊢ (((K \in HL \land W \in H) \land F \in T \land D \in T) \land (N \in T \land (P \in A \land \neg P \underset{˙}{\leq} W) \land R (F) = R (N)) \land (F \neq {I ↾}_{B} \land D \neq {I ↾}_{B} \land R (D) \neq R (F))) \to (P \in A \land \neg P \underset{˙}{\leq} W)$
15	2 5 6 7	ltrnel	$⊢ ((K \in HL \land W \in H) \land O \in T \land (P \in A \land \neg P \underset{˙}{\leq} W)) \to (O (P) \in A \land \neg O (P) \underset{˙}{\leq} W)$
16	11 13 14 15	syl3anc	$⊢ (((K \in HL \land W \in H) \land F \in T \land D \in T) \land (N \in T \land (P \in A \land \neg P \underset{˙}{\leq} W) \land R (F) = R (N)) \land (F \neq {I ↾}_{B} \land D \neq {I ↾}_{B} \land R (D) \neq R (F))) \to (O (P) \in A \land \neg O (P) \underset{˙}{\leq} W)$