| Mathbox for Jeff Hankins |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fnetr | Structured version Visualization version GIF version | ||
| Description: Transitivity of the fineness relation. (Contributed by Jeff Hankins, 5-Oct-2009.) (Proof shortened by Mario Carneiro, 11-Sep-2015.) |
| Ref | Expression |
|---|---|
| fnetr | ⊢ ((𝐴Fne𝐵 ∧ 𝐵Fne𝐶) → 𝐴Fne𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2737 | . . . 4 ⊢ ∪ 𝐴 = ∪ 𝐴 | |
| 2 | eqid 2737 | . . . 4 ⊢ ∪ 𝐵 = ∪ 𝐵 | |
| 3 | 1, 2 | fnebas 36557 | . . 3 ⊢ (𝐴Fne𝐵 → ∪ 𝐴 = ∪ 𝐵) |
| 4 | eqid 2737 | . . . 4 ⊢ ∪ 𝐶 = ∪ 𝐶 | |
| 5 | 2, 4 | fnebas 36557 | . . 3 ⊢ (𝐵Fne𝐶 → ∪ 𝐵 = ∪ 𝐶) |
| 6 | 3, 5 | sylan9eq 2792 | . 2 ⊢ ((𝐴Fne𝐵 ∧ 𝐵Fne𝐶) → ∪ 𝐴 = ∪ 𝐶) |
| 7 | fnerel 36551 | . . . . 5 ⊢ Rel Fne | |
| 8 | 7 | brrelex2i 5689 | . . . 4 ⊢ (𝐴Fne𝐵 → 𝐵 ∈ V) |
| 9 | 1, 2 | isfne4b 36554 | . . . . 5 ⊢ (𝐵 ∈ V → (𝐴Fne𝐵 ↔ (∪ 𝐴 = ∪ 𝐵 ∧ (topGen‘𝐴) ⊆ (topGen‘𝐵)))) |
| 10 | 9 | simplbda 499 | . . . 4 ⊢ ((𝐵 ∈ V ∧ 𝐴Fne𝐵) → (topGen‘𝐴) ⊆ (topGen‘𝐵)) |
| 11 | 8, 10 | mpancom 689 | . . 3 ⊢ (𝐴Fne𝐵 → (topGen‘𝐴) ⊆ (topGen‘𝐵)) |
| 12 | 7 | brrelex2i 5689 | . . . 4 ⊢ (𝐵Fne𝐶 → 𝐶 ∈ V) |
| 13 | 2, 4 | isfne4b 36554 | . . . . 5 ⊢ (𝐶 ∈ V → (𝐵Fne𝐶 ↔ (∪ 𝐵 = ∪ 𝐶 ∧ (topGen‘𝐵) ⊆ (topGen‘𝐶)))) |
| 14 | 13 | simplbda 499 | . . . 4 ⊢ ((𝐶 ∈ V ∧ 𝐵Fne𝐶) → (topGen‘𝐵) ⊆ (topGen‘𝐶)) |
| 15 | 12, 14 | mpancom 689 | . . 3 ⊢ (𝐵Fne𝐶 → (topGen‘𝐵) ⊆ (topGen‘𝐶)) |
| 16 | 11, 15 | sylan9ss 3949 | . 2 ⊢ ((𝐴Fne𝐵 ∧ 𝐵Fne𝐶) → (topGen‘𝐴) ⊆ (topGen‘𝐶)) |
| 17 | 12 | adantl 481 | . . 3 ⊢ ((𝐴Fne𝐵 ∧ 𝐵Fne𝐶) → 𝐶 ∈ V) |
| 18 | 1, 4 | isfne4b 36554 | . . 3 ⊢ (𝐶 ∈ V → (𝐴Fne𝐶 ↔ (∪ 𝐴 = ∪ 𝐶 ∧ (topGen‘𝐴) ⊆ (topGen‘𝐶)))) |
| 19 | 17, 18 | syl 17 | . 2 ⊢ ((𝐴Fne𝐵 ∧ 𝐵Fne𝐶) → (𝐴Fne𝐶 ↔ (∪ 𝐴 = ∪ 𝐶 ∧ (topGen‘𝐴) ⊆ (topGen‘𝐶)))) |
| 20 | 6, 16, 19 | mpbir2and 714 | 1 ⊢ ((𝐴Fne𝐵 ∧ 𝐵Fne𝐶) → 𝐴Fne𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3442 ⊆ wss 3903 ∪ cuni 4865 class class class wbr 5100 ‘cfv 6500 topGenctg 17369 Fnecfne 36549 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-iota 6456 df-fun 6502 df-fv 6508 df-topgen 17375 df-fne 36550 |
| This theorem is referenced by: fnessref 36570 fnemeet2 36580 fnejoin2 36582 |
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