| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > scottrankd | Structured version Visualization version GIF version | ||
| Description: Rank of a nonempty Scott's trick set. (Contributed by Rohan Ridenour, 11-Aug-2023.) |
| Ref | Expression |
|---|---|
| scottrankd.1 | ⊢ (𝜑 → 𝐵 ∈ Scott 𝐴) |
| Ref | Expression |
|---|---|
| scottrankd | ⊢ (𝜑 → (rank‘Scott 𝐴) = suc (rank‘𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | scottex 9963 | . . . 4 ⊢ Scott 𝐴 ∈ V | |
| 2 | 1 | rankval4 9914 | . . 3 ⊢ (rank‘Scott 𝐴) = ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝑥) |
| 3 | 2 | a1i 11 | . 2 ⊢ (𝜑 → (rank‘Scott 𝐴) = ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝑥)) |
| 4 | scottrankd.1 | . . . . . . 7 ⊢ (𝜑 → 𝐵 ∈ Scott 𝐴) | |
| 5 | 4 | adantr 486 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → 𝐵 ∈ Scott 𝐴) |
| 6 | simpr 490 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → 𝑥 ∈ Scott 𝐴) | |
| 7 | 5, 6 | scottelrankd 9978 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝐵) ⊆ (rank‘𝑥)) |
| 8 | 6, 5 | scottelrankd 9978 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝑥) ⊆ (rank‘𝐵)) |
| 9 | 7, 8 | eqssd 3930 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝐵) = (rank‘𝑥)) |
| 10 | 9 | suceqd 6451 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → suc (rank‘𝐵) = suc (rank‘𝑥)) |
| 11 | 10 | iuneq2dv 4979 | . 2 ⊢ (𝜑 → ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝐵) = ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝑥)) |
| 12 | 4 | ne0d 4291 | . . 3 ⊢ (𝜑 → Scott 𝐴 ≠ ∅) |
| 13 | iunconst 4964 | . . 3 ⊢ (Scott 𝐴 ≠ ∅ → ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝐵) = suc (rank‘𝐵)) | |
| 14 | 12, 13 | syl 18 | . 2 ⊢ (𝜑 → ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝐵) = suc (rank‘𝐵)) |
| 15 | 3, 11, 14 | 3eqtr2d 2804 | 1 ⊢ (𝜑 → (rank‘Scott 𝐴) = suc (rank‘𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 ∅c0 4281 ∪ ciun 4954 suc csuc 6385 ‘cfv 6561 rankcrnk 9797 Scott cscott 9958 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pow 5332 ax-pr 5396 ax-un 7778 ax-reg 9616 ax-inf2 9672 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-int 4911 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5551 df-eprel 5556 df-po 5564 df-so 5565 df-fr 5609 df-we 5611 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-pred 6325 df-ord 6386 df-on 6387 df-lim 6388 df-suc 6389 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-ov 7449 df-om 7905 df-2nd 8029 df-frecs 8330 df-wrecs 8361 df-recs 8410 df-rdg 8449 df-r1 9798 df-rank 9799 df-scott 9959 |
| This theorem is used by: rankscott 35851 rankscottu 35852 gruscottcld 45436 |
| Copyright terms: Public domain | W3C validator |