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| Mirrors > Home > ILE Home > Th. List > omsson | GIF version | ||
| Description: Omega is a subset of On. (Contributed by NM, 13-Jun-1994.) |
| Ref | Expression |
|---|---|
| omsson | ⊢ ω ⊆ On |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnon 4708 | . 2 ⊢ (𝑥 ∈ ω → 𝑥 ∈ On) | |
| 2 | 1 | ssriv 3231 | 1 ⊢ ω ⊆ On |
| Colors of variables: wff set class |
| Syntax hints: ⊆ wss 3200 Oncon0 4460 ωcom 4688 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-iinf 4686 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-uni 3894 df-int 3929 df-tr 4188 df-iord 4463 df-on 4465 df-suc 4468 df-iom 4689 |
| This theorem is referenced by: frecfnom 6567 frecrdg 6574 ficardon 7393 dmaddpi 7545 dmmulpi 7546 |
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