Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > onelon | Structured version Visualization version GIF version |
Description: An element of an ordinal number is an ordinal number. Theorem 2.2(iii) of [BellMachover] p. 469. (Contributed by NM, 26-Oct-2003.) |
Ref | Expression |
---|---|
onelon | ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ 𝐴) → 𝐵 ∈ On) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eloni 6196 | . 2 ⊢ (𝐴 ∈ On → Ord 𝐴) | |
2 | ordelon 6210 | . 2 ⊢ ((Ord 𝐴 ∧ 𝐵 ∈ 𝐴) → 𝐵 ∈ On) | |
3 | 1, 2 | sylan 582 | 1 ⊢ ((𝐴 ∈ On ∧ 𝐵 ∈ 𝐴) → 𝐵 ∈ On) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 ∈ wcel 2110 Ord word 6185 Oncon0 6186 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2156 ax-12 2172 ax-ext 2793 ax-sep 5196 ax-nul 5203 ax-pr 5322 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3497 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4833 df-br 5060 df-opab 5122 df-tr 5166 df-eprel 5460 df-po 5469 df-so 5470 df-fr 5509 df-we 5511 df-ord 6189 df-on 6190 |
This theorem is referenced by: oneli 6293 ssorduni 7494 unon 7540 tfindsg2 7570 dfom2 7576 ordom 7583 onfununi 7972 onnseq 7975 dfrecs3 8003 tz7.48-2 8072 tz7.49 8075 oalim 8151 omlim 8152 oelim 8153 oaordi 8166 oalimcl 8180 oaass 8181 omordi 8186 omlimcl 8198 odi 8199 omass 8200 omeulem1 8202 omeulem2 8203 omopth2 8204 oewordri 8212 oeordsuc 8214 oelimcl 8220 oeeui 8222 oaabs2 8266 omabs 8268 omxpenlem 8612 hartogs 9002 card2on 9012 cantnfle 9128 cantnflt 9129 cantnfp1lem3 9137 cantnfp1 9138 oemapvali 9141 cantnflem1b 9143 cantnflem1c 9144 cantnflem1d 9145 cantnflem1 9146 cantnflem2 9147 cantnflem3 9148 cantnflem4 9149 cantnf 9150 cnfcomlem 9156 cnfcom3lem 9160 cnfcom3 9161 r1ordg 9201 r1val3 9261 tskwe 9373 iscard 9398 cardmin2 9421 infxpenlem 9433 infxpenc2lem2 9440 alephordi 9494 alephord2i 9497 alephle 9508 cardaleph 9509 cfub 9665 cfsmolem 9686 zorn2lem5 9916 zorn2lem6 9917 ttukeylem6 9930 ttukeylem7 9931 ondomon 9979 cardmin 9980 alephval2 9988 alephreg 9998 smobeth 10002 winainflem 10109 inar1 10191 inatsk 10194 dfrdg2 33035 sltval2 33158 sltres 33164 nosepeq 33184 nosupno 33198 nosupres 33202 nosupbnd1lem1 33203 nosupbnd2lem1 33210 nosupbnd2 33211 dfrdg4 33407 ontopbas 33771 onpsstopbas 33773 onint1 33792 |
Copyright terms: Public domain | W3C validator |