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Mirrors > Home > MPE Home > Th. List > neipeltop | Structured version Visualization version GIF version |
Description: Lemma for neiptopreu 20747. (Contributed by Thierry Arnoux, 6-Jan-2018.) |
Ref | Expression |
---|---|
neiptop.o | ⊢ 𝐽 = {𝑎 ∈ 𝒫 𝑋 ∣ ∀𝑝 ∈ 𝑎 𝑎 ∈ (𝑁‘𝑝)} |
Ref | Expression |
---|---|
neipeltop | ⊢ (𝐶 ∈ 𝐽 ↔ (𝐶 ⊆ 𝑋 ∧ ∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq1 2676 | . . . 4 ⊢ (𝑎 = 𝐶 → (𝑎 ∈ (𝑁‘𝑝) ↔ 𝐶 ∈ (𝑁‘𝑝))) | |
2 | 1 | raleqbi1dv 3123 | . . 3 ⊢ (𝑎 = 𝐶 → (∀𝑝 ∈ 𝑎 𝑎 ∈ (𝑁‘𝑝) ↔ ∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝))) |
3 | neiptop.o | . . 3 ⊢ 𝐽 = {𝑎 ∈ 𝒫 𝑋 ∣ ∀𝑝 ∈ 𝑎 𝑎 ∈ (𝑁‘𝑝)} | |
4 | 2, 3 | elrab2 3333 | . 2 ⊢ (𝐶 ∈ 𝐽 ↔ (𝐶 ∈ 𝒫 𝑋 ∧ ∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝))) |
5 | 0ex 4718 | . . . . . . 7 ⊢ ∅ ∈ V | |
6 | eleq1 2676 | . . . . . . 7 ⊢ (𝐶 = ∅ → (𝐶 ∈ V ↔ ∅ ∈ V)) | |
7 | 5, 6 | mpbiri 247 | . . . . . 6 ⊢ (𝐶 = ∅ → 𝐶 ∈ V) |
8 | 7 | adantl 481 | . . . . 5 ⊢ ((∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝) ∧ 𝐶 = ∅) → 𝐶 ∈ V) |
9 | elex 3185 | . . . . . . 7 ⊢ (𝐶 ∈ (𝑁‘𝑝) → 𝐶 ∈ V) | |
10 | 9 | ralimi 2936 | . . . . . 6 ⊢ (∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝) → ∀𝑝 ∈ 𝐶 𝐶 ∈ V) |
11 | r19.3rzv 4016 | . . . . . . 7 ⊢ (𝐶 ≠ ∅ → (𝐶 ∈ V ↔ ∀𝑝 ∈ 𝐶 𝐶 ∈ V)) | |
12 | 11 | biimparc 503 | . . . . . 6 ⊢ ((∀𝑝 ∈ 𝐶 𝐶 ∈ V ∧ 𝐶 ≠ ∅) → 𝐶 ∈ V) |
13 | 10, 12 | sylan 487 | . . . . 5 ⊢ ((∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝) ∧ 𝐶 ≠ ∅) → 𝐶 ∈ V) |
14 | 8, 13 | pm2.61dane 2869 | . . . 4 ⊢ (∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝) → 𝐶 ∈ V) |
15 | elpwg 4116 | . . . 4 ⊢ (𝐶 ∈ V → (𝐶 ∈ 𝒫 𝑋 ↔ 𝐶 ⊆ 𝑋)) | |
16 | 14, 15 | syl 17 | . . 3 ⊢ (∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝) → (𝐶 ∈ 𝒫 𝑋 ↔ 𝐶 ⊆ 𝑋)) |
17 | 16 | pm5.32ri 668 | . 2 ⊢ ((𝐶 ∈ 𝒫 𝑋 ∧ ∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝)) ↔ (𝐶 ⊆ 𝑋 ∧ ∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝))) |
18 | 4, 17 | bitri 263 | 1 ⊢ (𝐶 ∈ 𝐽 ↔ (𝐶 ⊆ 𝑋 ∧ ∀𝑝 ∈ 𝐶 𝐶 ∈ (𝑁‘𝑝))) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ≠ wne 2780 ∀wral 2896 {crab 2900 Vcvv 3173 ⊆ wss 3540 ∅c0 3874 𝒫 cpw 4108 ‘cfv 5804 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-nul 4717 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rab 2905 df-v 3175 df-dif 3543 df-in 3547 df-ss 3554 df-nul 3875 df-pw 4110 |
This theorem is referenced by: neiptopuni 20744 neiptoptop 20745 neiptopnei 20746 neiptopreu 20747 |
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