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| Mirrors > Home > MPE Home > Th. List > isf32lem3 | Structured version Visualization version GIF version | ||
| Description: Lemma for isfin3-2 10277. Being a chain, difference sets are disjoint (one case). (Contributed by Stefan O'Rear, 5-Nov-2014.) |
| Ref | Expression |
|---|---|
| isf32lem.a | ⊢ (𝜑 → 𝐹:ω⟶𝒫 𝐺) |
| isf32lem.b | ⊢ (𝜑 → ∀𝑥 ∈ ω (𝐹‘suc 𝑥) ⊆ (𝐹‘𝑥)) |
| isf32lem.c | ⊢ (𝜑 → ¬ ∩ ran 𝐹 ∈ ran 𝐹) |
| Ref | Expression |
|---|---|
| isf32lem3 | ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → (((𝐹‘𝐴) ∖ (𝐹‘suc 𝐴)) ∩ ((𝐹‘𝐵) ∖ (𝐹‘suc 𝐵))) = ∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eldifi 4083 | . . . 4 ⊢ (𝑎 ∈ ((𝐹‘𝐴) ∖ (𝐹‘suc 𝐴)) → 𝑎 ∈ (𝐹‘𝐴)) | |
| 2 | simpll 766 | . . . . . 6 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → 𝐴 ∈ ω) | |
| 3 | peano2 7832 | . . . . . . 7 ⊢ (𝐵 ∈ ω → suc 𝐵 ∈ ω) | |
| 4 | 3 | ad2antlr 727 | . . . . . 6 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → suc 𝐵 ∈ ω) |
| 5 | nnord 7816 | . . . . . . . 8 ⊢ (𝐴 ∈ ω → Ord 𝐴) | |
| 6 | 5 | ad2antrr 726 | . . . . . . 7 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → Ord 𝐴) |
| 7 | simprl 770 | . . . . . . 7 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → 𝐵 ∈ 𝐴) | |
| 8 | ordsucss 7760 | . . . . . . 7 ⊢ (Ord 𝐴 → (𝐵 ∈ 𝐴 → suc 𝐵 ⊆ 𝐴)) | |
| 9 | 6, 7, 8 | sylc 65 | . . . . . 6 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → suc 𝐵 ⊆ 𝐴) |
| 10 | simprr 772 | . . . . . 6 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → 𝜑) | |
| 11 | isf32lem.a | . . . . . . 7 ⊢ (𝜑 → 𝐹:ω⟶𝒫 𝐺) | |
| 12 | isf32lem.b | . . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ ω (𝐹‘suc 𝑥) ⊆ (𝐹‘𝑥)) | |
| 13 | isf32lem.c | . . . . . . 7 ⊢ (𝜑 → ¬ ∩ ran 𝐹 ∈ ran 𝐹) | |
| 14 | 11, 12, 13 | isf32lem1 10263 | . . . . . 6 ⊢ (((𝐴 ∈ ω ∧ suc 𝐵 ∈ ω) ∧ (suc 𝐵 ⊆ 𝐴 ∧ 𝜑)) → (𝐹‘𝐴) ⊆ (𝐹‘suc 𝐵)) |
| 15 | 2, 4, 9, 10, 14 | syl22anc 838 | . . . . 5 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → (𝐹‘𝐴) ⊆ (𝐹‘suc 𝐵)) |
| 16 | 15 | sseld 3932 | . . . 4 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → (𝑎 ∈ (𝐹‘𝐴) → 𝑎 ∈ (𝐹‘suc 𝐵))) |
| 17 | elndif 4085 | . . . 4 ⊢ (𝑎 ∈ (𝐹‘suc 𝐵) → ¬ 𝑎 ∈ ((𝐹‘𝐵) ∖ (𝐹‘suc 𝐵))) | |
| 18 | 1, 16, 17 | syl56 36 | . . 3 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → (𝑎 ∈ ((𝐹‘𝐴) ∖ (𝐹‘suc 𝐴)) → ¬ 𝑎 ∈ ((𝐹‘𝐵) ∖ (𝐹‘suc 𝐵)))) |
| 19 | 18 | ralrimiv 3127 | . 2 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → ∀𝑎 ∈ ((𝐹‘𝐴) ∖ (𝐹‘suc 𝐴)) ¬ 𝑎 ∈ ((𝐹‘𝐵) ∖ (𝐹‘suc 𝐵))) |
| 20 | disj 4402 | . 2 ⊢ ((((𝐹‘𝐴) ∖ (𝐹‘suc 𝐴)) ∩ ((𝐹‘𝐵) ∖ (𝐹‘suc 𝐵))) = ∅ ↔ ∀𝑎 ∈ ((𝐹‘𝐴) ∖ (𝐹‘suc 𝐴)) ¬ 𝑎 ∈ ((𝐹‘𝐵) ∖ (𝐹‘suc 𝐵))) | |
| 21 | 19, 20 | sylibr 234 | 1 ⊢ (((𝐴 ∈ ω ∧ 𝐵 ∈ ω) ∧ (𝐵 ∈ 𝐴 ∧ 𝜑)) → (((𝐹‘𝐴) ∖ (𝐹‘suc 𝐴)) ∩ ((𝐹‘𝐵) ∖ (𝐹‘suc 𝐵))) = ∅) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∀wral 3051 ∖ cdif 3898 ∩ cin 3900 ⊆ wss 3901 ∅c0 4285 𝒫 cpw 4554 ∩ cint 4902 ran crn 5625 Ord word 6316 suc csuc 6319 ⟶wf 6488 ‘cfv 6492 ωcom 7808 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-tr 5206 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fv 6500 df-om 7809 |
| This theorem is referenced by: isf32lem4 10266 |
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