| 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 9876 | . . . 4 ⊢ Scott 𝐴 ∈ V | |
| 2 | 1 | rankval4 9853 | . . 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 9891 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝐵) ⊆ (rank‘𝑥)) |
| 8 | 6, 5 | scottelrankd 9891 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝑥) ⊆ (rank‘𝐵)) |
| 9 | 7, 8 | eqssd 3951 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ Scott 𝐴) → (rank‘𝐵) = (rank‘𝑥)) |
| 10 | 9 | suceqd 6429 | . . 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 2803 | 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 2145 ≠ wne 2957 ∅c0 4282 ∪ ciun 4954 suc csuc 6363 ‘cfv 6537 rankcrnk 9749 Scott cscott 9871 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 ax-reg 9568 ax-inf2 9624 |
| 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 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-int 4911 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7420 df-om 7867 df-2nd 7991 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-r1 9750 df-rank 9751 df-scott 9872 |
| This theorem is used by: rankscott 35643 rankscottu 35644 gruscottcld 45081 |
| Copyright terms: Public domain | W3C validator |