| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > sbthcl | Structured version Visualization version GIF version | ||
| Description: Schroeder-Bernstein Theorem in class form. (Contributed by NM, 28-Mar-1998.) |
| Ref | Expression |
|---|---|
| sbthcl | ⊢ ≈ = ( ≼ ∩ ◡ ≼ ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relen 8898 | . 2 ⊢ Rel ≈ | |
| 2 | inss1 4177 | . . 3 ⊢ ( ≼ ∩ ◡ ≼ ) ⊆ ≼ | |
| 3 | reldom 8899 | . . 3 ⊢ Rel ≼ | |
| 4 | relss 5738 | . . 3 ⊢ (( ≼ ∩ ◡ ≼ ) ⊆ ≼ → (Rel ≼ → Rel ( ≼ ∩ ◡ ≼ ))) | |
| 5 | 2, 3, 4 | mp2 9 | . 2 ⊢ Rel ( ≼ ∩ ◡ ≼ ) |
| 6 | brin 5137 | . . 3 ⊢ (𝑥( ≼ ∩ ◡ ≼ )𝑦 ↔ (𝑥 ≼ 𝑦 ∧ 𝑥◡ ≼ 𝑦)) | |
| 7 | vex 3433 | . . . . 5 ⊢ 𝑥 ∈ V | |
| 8 | vex 3433 | . . . . 5 ⊢ 𝑦 ∈ V | |
| 9 | 7, 8 | brcnv 5837 | . . . 4 ⊢ (𝑥◡ ≼ 𝑦 ↔ 𝑦 ≼ 𝑥) |
| 10 | 9 | anbi2i 624 | . . 3 ⊢ ((𝑥 ≼ 𝑦 ∧ 𝑥◡ ≼ 𝑦) ↔ (𝑥 ≼ 𝑦 ∧ 𝑦 ≼ 𝑥)) |
| 11 | sbthb 9036 | . . 3 ⊢ ((𝑥 ≼ 𝑦 ∧ 𝑦 ≼ 𝑥) ↔ 𝑥 ≈ 𝑦) | |
| 12 | 6, 10, 11 | 3bitrri 298 | . 2 ⊢ (𝑥 ≈ 𝑦 ↔ 𝑥( ≼ ∩ ◡ ≼ )𝑦) |
| 13 | 1, 5, 12 | eqbrriv 5747 | 1 ⊢ ≈ = ( ≼ ∩ ◡ ≼ ) |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 = wceq 1542 ∩ cin 3888 ⊆ wss 3889 class class class wbr 5085 ◡ccnv 5630 Rel wrel 5636 ≈ cen 8890 ≼ cdom 8891 |
| 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 2708 ax-sep 5231 ax-pow 5307 ax-pr 5375 ax-un 7689 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-er 8643 df-en 8894 df-dom 8895 |
| This theorem is referenced by: dfsdom2 9038 |
| Copyright terms: Public domain | W3C validator |