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Related theorems GIF version |
| Description: Omega is a subset of On. |
| Ref | Expression |
|---|---|
| omsson | ⊢ ω ⊆ On |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | visset 1350 | . . . . 5 ⊢ x ∈ V | |
| 2 | 1 | elom 2375 | . . . 4 ⊢ (x ∈ ω ↔ (Ord x ∧ ∀y(Lim y → x ∈ y))) |
| 3 | 2 | pm3.26bd 259 | . . 3 ⊢ (x ∈ ω → Ord x) |
| 4 | 1 | elon 2208 | . . 3 ⊢ (x ∈ On ↔ Ord x) |
| 5 | 3, 4 | sylibr 175 | . 2 ⊢ (x ∈ ω → x ∈ On) |
| 6 | 5 | ssriv 1508 | 1 ⊢ ω ⊆ On |
| Colors of variables: wff set class |
| Syntax hints: → wi 2 ∀wal 672 ∈ wel 803 ∈ wcel 1092 ⊆ wss 1487 Ord word 2198 Oncon0 2199 Lim wlim 2200 ωcom 2372 |
| This theorem is referenced by: limomss 2378 nnont 2379 ordom 2382 frfnom 2989 unblem1 3431 unblem2 3432 unblem3 3433 unblem4 3434 isfinite2 3437 dmaddpi 3812 dmmulpi 3813 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-16 922 ax-17 925 ax-ext 1074 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3an 583 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-ral 1205 df-rex 1206 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-sn 1811 df-pr 1812 df-op 1815 df-uni 1920 df-tr 2042 df-br 2063 df-po 2128 df-so 2138 df-fr 2169 df-we 2186 df-ord 2202 df-on 2203 df-om 2373 |