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| Mirrors > Home > MPE Home > Th. List > ranksn | Structured version Visualization version GIF version | ||
| Description: The rank of a singleton. Theorem 15.17(v) of [Monk1] p. 112. (Contributed by NM, 28-Nov-2003.) (Revised by Mario Carneiro, 17-Nov-2014.) |
| Ref | Expression |
|---|---|
| ranksn.1 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| ranksn | ⊢ (rank‘{𝐴}) = suc (rank‘𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ranksn.1 | . . 3 ⊢ 𝐴 ∈ V | |
| 2 | unir1 9731 | . . 3 ⊢ ∪ (𝑅1 “ On) = V | |
| 3 | 1, 2 | eleqtrri 2836 | . 2 ⊢ 𝐴 ∈ ∪ (𝑅1 “ On) |
| 4 | ranksnb 9745 | . 2 ⊢ (𝐴 ∈ ∪ (𝑅1 “ On) → (rank‘{𝐴}) = suc (rank‘𝐴)) | |
| 5 | 3, 4 | ax-mp 5 | 1 ⊢ (rank‘{𝐴}) = suc (rank‘𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 Vcvv 3430 {csn 4568 ∪ cuni 4851 “ cima 5628 Oncon0 6318 suc csuc 6320 ‘cfv 6493 𝑅1cr1 9680 rankcrnk 9681 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5213 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-reg 9501 ax-inf2 9556 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-ov 7364 df-om 7812 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-r1 9682 df-rank 9683 |
| This theorem is referenced by: ranksuc 9783 ranksng 36368 |
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