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Mirrors > Home > ILE Home > Th. List > opexg | GIF version |
Description: An ordered pair of sets is a set. (Contributed by Jim Kingdon, 11-Jan-2019.) |
Ref | Expression |
---|---|
opexg | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 〈𝐴, 𝐵〉 ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfopg 3703 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 〈𝐴, 𝐵〉 = {{𝐴}, {𝐴, 𝐵}}) | |
2 | elex 2697 | . . . . 5 ⊢ (𝐴 ∈ 𝑉 → 𝐴 ∈ V) | |
3 | snexg 4108 | . . . . 5 ⊢ (𝐴 ∈ V → {𝐴} ∈ V) | |
4 | 2, 3 | syl 14 | . . . 4 ⊢ (𝐴 ∈ 𝑉 → {𝐴} ∈ V) |
5 | 4 | adantr 274 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → {𝐴} ∈ V) |
6 | elex 2697 | . . . 4 ⊢ (𝐵 ∈ 𝑊 → 𝐵 ∈ V) | |
7 | prexg 4133 | . . . 4 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → {𝐴, 𝐵} ∈ V) | |
8 | 2, 6, 7 | syl2an 287 | . . 3 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → {𝐴, 𝐵} ∈ V) |
9 | prexg 4133 | . . 3 ⊢ (({𝐴} ∈ V ∧ {𝐴, 𝐵} ∈ V) → {{𝐴}, {𝐴, 𝐵}} ∈ V) | |
10 | 5, 8, 9 | syl2anc 408 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → {{𝐴}, {𝐴, 𝐵}} ∈ V) |
11 | 1, 10 | eqeltrd 2216 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → 〈𝐴, 𝐵〉 ∈ V) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∈ wcel 1480 Vcvv 2686 {csn 3527 {cpr 3528 〈cop 3530 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 ax-sep 4046 ax-pow 4098 ax-pr 4131 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-v 2688 df-un 3075 df-in 3077 df-ss 3084 df-pw 3512 df-sn 3533 df-pr 3534 df-op 3536 |
This theorem is referenced by: opex 4151 otexg 4152 opeliunxp 4594 opbrop 4618 relsnopg 4643 opswapg 5025 elxp4 5026 elxp5 5027 resfunexg 5641 fliftel 5694 fliftel1 5695 oprabid 5803 ovexg 5805 eloprabga 5858 op1st 6044 op2nd 6045 ot1stg 6050 ot2ndg 6051 ot3rdgg 6052 elxp6 6067 mpofvex 6101 algrflem 6126 algrflemg 6127 mpoxopoveq 6137 brtposg 6151 tfr0dm 6219 tfrlemisucaccv 6222 tfrlemibxssdm 6224 tfrlemibfn 6225 tfrlemi14d 6230 tfr1onlemsucaccv 6238 tfr1onlembxssdm 6240 tfr1onlembfn 6241 tfr1onlemres 6246 tfrcllemsucaccv 6251 tfrcllembxssdm 6253 tfrcllembfn 6254 tfrcllemres 6259 fnfi 6825 djulclb 6940 inl11 6950 1stinl 6959 2ndinl 6960 1stinr 6961 2ndinr 6962 mulpipq2 7179 enq0breq 7244 addvalex 7652 peano2nnnn 7661 axcnre 7689 frec2uzrdg 10182 frecuzrdg0 10186 frecuzrdgg 10189 frecuzrdg0t 10195 zfz1isolem1 10583 eucalgval2 11734 crth 11900 phimullem 11901 ennnfonelemp1 11919 setsvala 11990 setsex 11991 setsfun 11994 setsfun0 11995 setsresg 11997 setscom 11999 strslfv 12003 setsslid 12009 strle1g 12049 1strbas 12058 2strbasg 12060 2stropg 12061 2strbas1g 12063 2strop1g 12064 rngbaseg 12075 rngplusgg 12076 rngmulrg 12077 srngbased 12082 srngplusgd 12083 srngmulrd 12084 srnginvld 12085 lmodbased 12093 lmodplusgd 12094 lmodscad 12095 lmodvscad 12096 ipsbased 12101 ipsaddgd 12102 ipsmulrd 12103 ipsscad 12104 ipsvscad 12105 ipsipd 12106 topgrpbasd 12111 topgrpplusgd 12112 topgrptsetd 12113 txlm 12448 |
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