Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > onss | Structured version Visualization version GIF version |
Description: An ordinal number is a subset of the class of ordinal numbers. (Contributed by NM, 5-Jun-1994.) |
Ref | Expression |
---|---|
onss | ⊢ (𝐴 ∈ On → 𝐴 ⊆ On) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eloni 6203 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
2 | ordsson 7506 | . 2 ⊢ (Ord 𝐴 → 𝐴 ⊆ On) | |
3 | 1, 2 | syl 17 | 1 ⊢ (𝐴 ∈ On → 𝐴 ⊆ On) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 ⊆ wss 3938 Ord word 6192 Oncon0 6193 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pr 5332 ax-un 7463 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-ral 3145 df-rex 3146 df-rab 3149 df-v 3498 df-sbc 3775 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-br 5069 df-opab 5131 df-tr 5175 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-ord 6196 df-on 6197 |
This theorem is referenced by: predon 7508 onuni 7510 onminex 7524 suceloni 7530 onssi 7554 tfi 7570 tfr3 8037 tz7.49 8083 tz7.49c 8084 oacomf1olem 8192 oeeulem 8229 ordtypelem2 8985 cantnfcl 9132 cantnflt 9137 cantnfp1lem3 9145 oemapvali 9149 cantnflem1c 9152 cantnflem1d 9153 cantnflem1 9154 cantnf 9158 cnfcom 9165 cnfcom3lem 9168 infxpenlem 9441 ac10ct 9462 dfac12lem1 9571 dfac12lem2 9572 cfeq0 9680 cfsuc 9681 cff1 9682 cfflb 9683 cofsmo 9693 cfsmolem 9694 alephsing 9700 zorn2lem2 9921 ttukeylem3 9935 ttukeylem5 9937 ttukeylem6 9938 inar1 10199 soseq 33098 nosupno 33205 ontgval 33781 aomclem6 39666 |
Copyright terms: Public domain | W3C validator |