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| 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 9937 | . . . 4 ⊢ Scott 𝐴 ∈ V | |
| 2 | 1 | rankval4 9888 | . . 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 9952 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝐵) ⊆ (rank‘𝑥)) |
| 8 | 6, 5 | scottelrankd 9952 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝑥) ⊆ (rank‘𝐵)) |
| 9 | 7, 8 | eqssd 3925 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝐵) = (rank‘𝑥)) |
| 10 | 9 | suceqd 6430 | . . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → suc (rank‘𝐵) = suc (rank‘𝑥)) |
| 11 | 10 | iuneq2dv 4975 | . 2 ⊢ (𝜑 → ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝐵) = ∪ 𝑥 ∈ Scott 𝐴 suc (rank‘𝑥)) |
| 12 | 4 | ne0d 4287 | . . 3 ⊢ (𝜑 → Scott 𝐴 ≠ ∅) |
| 13 | iunconst 4960 | . . 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 2801 | 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 1569 ∈ wcel 2144 ≠ wne 2955 ∅c0 4278 ∪ ciun 4950 suc csuc 6364 ‘cfv 6539 rankcrnk 9771 Scott cscott 9932 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-reg 9590 ax-inf2 9646 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-int 4907 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-ov 7424 df-om 7879 df-2nd 8003 df-frecs 8303 df-wrecs 8334 df-recs 8383 df-rdg 8422 df-r1 9772 df-rank 9773 df-scott 9933 |
| This theorem is used by: rankscott 35807 rankscottu 35808 gruscottcld 45327 |
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