Mathbox for Rohan Ridenour |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > r1rankcld | Structured version Visualization version GIF version |
Description: Any rank of the cumulative hierarchy is closed under the rank function. (Contributed by Rohan Ridenour, 11-Aug-2023.) |
Ref | Expression |
---|---|
r1rankcld.1 | ⊢ (𝜑 → 𝐴 ∈ (𝑅1‘𝑅)) |
Ref | Expression |
---|---|
r1rankcld | ⊢ (𝜑 → (rank‘𝐴) ∈ (𝑅1‘𝑅)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | onssr1 9520 | . . . 4 ⊢ (𝑅 ∈ dom 𝑅1 → 𝑅 ⊆ (𝑅1‘𝑅)) | |
2 | 1 | adantl 481 | . . 3 ⊢ ((𝜑 ∧ 𝑅 ∈ dom 𝑅1) → 𝑅 ⊆ (𝑅1‘𝑅)) |
3 | r1rankcld.1 | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ (𝑅1‘𝑅)) | |
4 | rankr1ai 9487 | . . . . 5 ⊢ (𝐴 ∈ (𝑅1‘𝑅) → (rank‘𝐴) ∈ 𝑅) | |
5 | 3, 4 | syl 17 | . . . 4 ⊢ (𝜑 → (rank‘𝐴) ∈ 𝑅) |
6 | 5 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑅 ∈ dom 𝑅1) → (rank‘𝐴) ∈ 𝑅) |
7 | 2, 6 | sseldd 3918 | . 2 ⊢ ((𝜑 ∧ 𝑅 ∈ dom 𝑅1) → (rank‘𝐴) ∈ (𝑅1‘𝑅)) |
8 | 3 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝑅 ∈ dom 𝑅1) → 𝐴 ∈ (𝑅1‘𝑅)) |
9 | noel 4261 | . . . . . 6 ⊢ ¬ 𝐴 ∈ ∅ | |
10 | 9 | a1i 11 | . . . . 5 ⊢ (¬ 𝑅 ∈ dom 𝑅1 → ¬ 𝐴 ∈ ∅) |
11 | ndmfv 6786 | . . . . 5 ⊢ (¬ 𝑅 ∈ dom 𝑅1 → (𝑅1‘𝑅) = ∅) | |
12 | 10, 11 | neleqtrrd 2861 | . . . 4 ⊢ (¬ 𝑅 ∈ dom 𝑅1 → ¬ 𝐴 ∈ (𝑅1‘𝑅)) |
13 | 12 | adantl 481 | . . 3 ⊢ ((𝜑 ∧ ¬ 𝑅 ∈ dom 𝑅1) → ¬ 𝐴 ∈ (𝑅1‘𝑅)) |
14 | 8, 13 | pm2.21dd 194 | . 2 ⊢ ((𝜑 ∧ ¬ 𝑅 ∈ dom 𝑅1) → (rank‘𝐴) ∈ (𝑅1‘𝑅)) |
15 | 7, 14 | pm2.61dan 809 | 1 ⊢ (𝜑 → (rank‘𝐴) ∈ (𝑅1‘𝑅)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 ∈ wcel 2108 ⊆ wss 3883 ∅c0 4253 dom cdm 5580 ‘cfv 6418 𝑅1cr1 9451 rankcrnk 9452 |
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-sep 5218 ax-nul 5225 ax-pow 5283 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-lim 6256 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-om 7688 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-r1 9453 df-rank 9454 |
This theorem is referenced by: grurankcld 41740 |
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