Mathbox for Stefan O'Rear |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > dnnumch3lem | Structured version Visualization version GIF version |
Description: Value of the ordinal injection function. (Contributed by Stefan O'Rear, 18-Jan-2015.) |
Ref | Expression |
---|---|
dnnumch.f | ⊢ 𝐹 = recs((𝑧 ∈ V ↦ (𝐺‘(𝐴 ∖ ran 𝑧)))) |
dnnumch.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
dnnumch.g | ⊢ (𝜑 → ∀𝑦 ∈ 𝒫 𝐴(𝑦 ≠ ∅ → (𝐺‘𝑦) ∈ 𝑦)) |
Ref | Expression |
---|---|
dnnumch3lem | ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ ∩ (◡𝐹 “ {𝑥}))‘𝑤) = ∩ (◡𝐹 “ {𝑤})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2738 | . 2 ⊢ (𝑥 ∈ 𝐴 ↦ ∩ (◡𝐹 “ {𝑥})) = (𝑥 ∈ 𝐴 ↦ ∩ (◡𝐹 “ {𝑥})) | |
2 | sneq 4568 | . . . 4 ⊢ (𝑥 = 𝑤 → {𝑥} = {𝑤}) | |
3 | 2 | imaeq2d 5958 | . . 3 ⊢ (𝑥 = 𝑤 → (◡𝐹 “ {𝑥}) = (◡𝐹 “ {𝑤})) |
4 | 3 | inteqd 4881 | . 2 ⊢ (𝑥 = 𝑤 → ∩ (◡𝐹 “ {𝑥}) = ∩ (◡𝐹 “ {𝑤})) |
5 | simpr 484 | . 2 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐴) → 𝑤 ∈ 𝐴) | |
6 | cnvimass 5978 | . . . 4 ⊢ (◡𝐹 “ {𝑤}) ⊆ dom 𝐹 | |
7 | dnnumch.f | . . . . . 6 ⊢ 𝐹 = recs((𝑧 ∈ V ↦ (𝐺‘(𝐴 ∖ ran 𝑧)))) | |
8 | 7 | tfr1 8199 | . . . . 5 ⊢ 𝐹 Fn On |
9 | 8 | fndmi 6521 | . . . 4 ⊢ dom 𝐹 = On |
10 | 6, 9 | sseqtri 3953 | . . 3 ⊢ (◡𝐹 “ {𝑤}) ⊆ On |
11 | dnnumch.a | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
12 | dnnumch.g | . . . . . 6 ⊢ (𝜑 → ∀𝑦 ∈ 𝒫 𝐴(𝑦 ≠ ∅ → (𝐺‘𝑦) ∈ 𝑦)) | |
13 | 7, 11, 12 | dnnumch2 40786 | . . . . 5 ⊢ (𝜑 → 𝐴 ⊆ ran 𝐹) |
14 | 13 | sselda 3917 | . . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐴) → 𝑤 ∈ ran 𝐹) |
15 | inisegn0 5995 | . . . 4 ⊢ (𝑤 ∈ ran 𝐹 ↔ (◡𝐹 “ {𝑤}) ≠ ∅) | |
16 | 14, 15 | sylib 217 | . . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐴) → (◡𝐹 “ {𝑤}) ≠ ∅) |
17 | oninton 7622 | . . 3 ⊢ (((◡𝐹 “ {𝑤}) ⊆ On ∧ (◡𝐹 “ {𝑤}) ≠ ∅) → ∩ (◡𝐹 “ {𝑤}) ∈ On) | |
18 | 10, 16, 17 | sylancr 586 | . 2 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐴) → ∩ (◡𝐹 “ {𝑤}) ∈ On) |
19 | 1, 4, 5, 18 | fvmptd3 6880 | 1 ⊢ ((𝜑 ∧ 𝑤 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ ∩ (◡𝐹 “ {𝑥}))‘𝑤) = ∩ (◡𝐹 “ {𝑤})) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ∀wral 3063 Vcvv 3422 ∖ cdif 3880 ⊆ wss 3883 ∅c0 4253 𝒫 cpw 4530 {csn 4558 ∩ cint 4876 ↦ cmpt 5153 ◡ccnv 5579 dom cdm 5580 ran crn 5581 “ cima 5583 Oncon0 6251 ‘cfv 6418 recscrecs 8172 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-ov 7258 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 |
This theorem is referenced by: dnnumch3 40788 dnwech 40789 |
Copyright terms: Public domain | W3C validator |