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| Mirrors > Home > ILE Home > Th. List > pw1dom2 | GIF version | ||
| Description: The power set of 1o dominates 2o. Also see pwpw0ss 3908 which is similar. (Contributed by Jim Kingdon, 21-Sep-2022.) |
| Ref | Expression |
|---|---|
| pw1dom2 | ⊢ 2o ≼ 𝒫 1o |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0nep0 4277 | . . . 4 ⊢ ∅ ≠ {∅} | |
| 2 | 0ex 4236 | . . . . 5 ⊢ ∅ ∈ V | |
| 3 | p0ex 4300 | . . . . 5 ⊢ {∅} ∈ V | |
| 4 | pr2ne 7488 | . . . . 5 ⊢ ((∅ ∈ V ∧ {∅} ∈ V) → ({∅, {∅}} ≈ 2o ↔ ∅ ≠ {∅})) | |
| 5 | 2, 3, 4 | mp2an 426 | . . . 4 ⊢ ({∅, {∅}} ≈ 2o ↔ ∅ ≠ {∅}) |
| 6 | 1, 5 | mpbir 146 | . . 3 ⊢ {∅, {∅}} ≈ 2o |
| 7 | 6 | ensymi 7021 | . 2 ⊢ 2o ≈ {∅, {∅}} |
| 8 | 3 | pwex 4295 | . . . 4 ⊢ 𝒫 {∅} ∈ V |
| 9 | pwpw0ss 3908 | . . . 4 ⊢ {∅, {∅}} ⊆ 𝒫 {∅} | |
| 10 | ssdomg 7017 | . . . 4 ⊢ (𝒫 {∅} ∈ V → ({∅, {∅}} ⊆ 𝒫 {∅} → {∅, {∅}} ≼ 𝒫 {∅})) | |
| 11 | 8, 9, 10 | mp2 16 | . . 3 ⊢ {∅, {∅}} ≼ 𝒫 {∅} |
| 12 | df1o2 6660 | . . . 4 ⊢ 1o = {∅} | |
| 13 | 12 | pweqi 3672 | . . 3 ⊢ 𝒫 1o = 𝒫 {∅} |
| 14 | 11, 13 | breqtrri 4135 | . 2 ⊢ {∅, {∅}} ≼ 𝒫 1o |
| 15 | endomtr 7029 | . 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 2203 ≠ wne 2412 Vcvv 2812 ⊆ wss 3210 ∅c0 3507 𝒫 cpw 3668 {csn 3688 {cpr 3689 class class class wbr 4108 1oc1o 6639 2oc2o 6640 ≈ cen 6972 ≼ cdom 6973 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-nul 4235 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-iinf 4709 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-reu 2527 df-rab 2529 df-v 2814 df-sbc 3042 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-int 3949 df-br 4109 df-opab 4171 df-tr 4208 df-id 4413 df-iord 4486 df-on 4488 df-suc 4491 df-iom 4712 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-rn 4759 df-res 4760 df-ima 4761 df-iota 5311 df-fun 5353 df-fn 5354 df-f 5355 df-f1 5356 df-fo 5357 df-f1o 5358 df-fv 5359 df-1o 6646 df-2o 6647 df-er 6766 df-en 6975 df-dom 6976 |
| This theorem is referenced by: pwf1oexmid 16765 |
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