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| Mirrors > Home > ILE Home > Th. List > pw1dom2 | GIF version | ||
| Description: The power set of 1o dominates 2o. Also see pwpw0ss 3859 which is similar. (Contributed by Jim Kingdon, 21-Sep-2022.) |
| Ref | Expression |
|---|---|
| pw1dom2 | ⊢ 2o ≼ 𝒫 1o |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0nep0 4225 | . . . 4 ⊢ ∅ ≠ {∅} | |
| 2 | 0ex 4187 | . . . . 5 ⊢ ∅ ∈ V | |
| 3 | p0ex 4248 | . . . . 5 ⊢ {∅} ∈ V | |
| 4 | pr2ne 7326 | . . . . 5 ⊢ ((∅ ∈ V ∧ {∅} ∈ V) → ({∅, {∅}} ≈ 2o ↔ ∅ ≠ {∅})) | |
| 5 | 2, 3, 4 | mp2an 426 | . . . 4 ⊢ ({∅, {∅}} ≈ 2o ↔ ∅ ≠ {∅}) |
| 6 | 1, 5 | mpbir 146 | . . 3 ⊢ {∅, {∅}} ≈ 2o |
| 7 | 6 | ensymi 6897 | . 2 ⊢ 2o ≈ {∅, {∅}} |
| 8 | 3 | pwex 4243 | . . . 4 ⊢ 𝒫 {∅} ∈ V |
| 9 | pwpw0ss 3859 | . . . 4 ⊢ {∅, {∅}} ⊆ 𝒫 {∅} | |
| 10 | ssdomg 6893 | . . . 4 ⊢ (𝒫 {∅} ∈ V → ({∅, {∅}} ⊆ 𝒫 {∅} → {∅, {∅}} ≼ 𝒫 {∅})) | |
| 11 | 8, 9, 10 | mp2 16 | . . 3 ⊢ {∅, {∅}} ≼ 𝒫 {∅} |
| 12 | df1o2 6538 | . . . 4 ⊢ 1o = {∅} | |
| 13 | 12 | pweqi 3630 | . . 3 ⊢ 𝒫 1o = 𝒫 {∅} |
| 14 | 11, 13 | breqtrri 4086 | . 2 ⊢ {∅, {∅}} ≼ 𝒫 1o |
| 15 | endomtr 6905 | . 2 ⊢ ((2o ≈ {∅, {∅}} ∧ {∅, {∅}} ≼ 𝒫 1o) → 2o ≼ 𝒫 1o) | |
| 16 | 7, 14, 15 | mp2an 426 | 1 ⊢ 2o ≼ 𝒫 1o |
| Colors of variables: wff set class |
| Syntax hints: ↔ wb 105 ∈ wcel 2178 ≠ wne 2378 Vcvv 2776 ⊆ wss 3174 ∅c0 3468 𝒫 cpw 3626 {csn 3643 {cpr 3644 class class class wbr 4059 1oc1o 6518 2oc2o 6519 ≈ cen 6848 ≼ cdom 6849 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2180 ax-14 2181 ax-ext 2189 ax-sep 4178 ax-nul 4186 ax-pow 4234 ax-pr 4269 ax-un 4498 ax-setind 4603 ax-iinf 4654 |
| This theorem depends on definitions: df-bi 117 df-dc 837 df-3or 982 df-3an 983 df-tru 1376 df-fal 1379 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ne 2379 df-ral 2491 df-rex 2492 df-reu 2493 df-rab 2495 df-v 2778 df-sbc 3006 df-dif 3176 df-un 3178 df-in 3180 df-ss 3187 df-nul 3469 df-pw 3628 df-sn 3649 df-pr 3650 df-op 3652 df-uni 3865 df-int 3900 df-br 4060 df-opab 4122 df-tr 4159 df-id 4358 df-iord 4431 df-on 4433 df-suc 4436 df-iom 4657 df-xp 4699 df-rel 4700 df-cnv 4701 df-co 4702 df-dm 4703 df-rn 4704 df-res 4705 df-ima 4706 df-iota 5251 df-fun 5292 df-fn 5293 df-f 5294 df-f1 5295 df-fo 5296 df-f1o 5297 df-fv 5298 df-1o 6525 df-2o 6526 df-er 6643 df-en 6851 df-dom 6852 |
| This theorem is referenced by: pwf1oexmid 16138 |
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