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| Mirrors > Home > ILE Home > Th. List > enrex | GIF version | ||
| Description: The equivalence relation for signed reals exists. (Contributed by NM, 25-Jul-1995.) |
| Ref | Expression |
|---|---|
| enrex | ⊢ ~R ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | npex 7793 | . . . 4 ⊢ P ∈ V | |
| 2 | 1, 1 | xpex 4868 | . . 3 ⊢ (P × P) ∈ V |
| 3 | 2, 2 | xpex 4868 | . 2 ⊢ ((P × P) × (P × P)) ∈ V |
| 4 | df-enr 8046 | . . 3 ⊢ ~R = {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ (P × P) ∧ 𝑦 ∈ (P × P)) ∧ ∃𝑧∃𝑤∃𝑣∃𝑢((𝑥 = 〈𝑧, 𝑤〉 ∧ 𝑦 = 〈𝑣, 𝑢〉) ∧ (𝑧 +P 𝑢) = (𝑤 +P 𝑣)))} | |
| 5 | opabssxp 4826 | . . 3 ⊢ {〈𝑥, 𝑦〉 ∣ ((𝑥 ∈ (P × P) ∧ 𝑦 ∈ (P × P)) ∧ ∃𝑧∃𝑤∃𝑣∃𝑢((𝑥 = 〈𝑧, 𝑤〉 ∧ 𝑦 = 〈𝑣, 𝑢〉) ∧ (𝑧 +P 𝑢) = (𝑤 +P 𝑣)))} ⊆ ((P × P) × (P × P)) | |
| 6 | 4, 5 | eqsstri 3272 | . 2 ⊢ ~R ⊆ ((P × P) × (P × P)) |
| 7 | 3, 6 | ssexi 4250 | 1 ⊢ ~R ∈ V |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 = wceq 1398 ∃wex 1541 ∈ wcel 2205 Vcvv 2815 〈cop 3694 {copab 4172 × cxp 4749 (class class class)co 6052 Pcnp 7611 +P cpp 7613 ~R cer 7616 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-coll 4227 ax-sep 4230 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-iinf 4712 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-id 4416 df-iom 4715 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-f1 5359 df-fo 5360 df-f1o 5361 df-fv 5362 df-qs 6775 df-ni 7624 df-nqqs 7668 df-inp 7786 df-enr 8046 |
| This theorem is referenced by: addsrpr 8065 mulsrpr 8066 ltsrprg 8067 0r 8070 1sr 8071 m1r 8072 addclsr 8073 mulclsr 8074 recexgt0sr 8093 prsrcl 8104 ltpsrprg 8123 mappsrprg 8124 suplocsrlemb 8126 pitonnlem2 8167 pitonn 8168 pitore 8170 recnnre 8171 |
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