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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 7557 | . . . 4 ⊢ P ∈ V | |
| 2 | 1, 1 | xpex 4779 | . . 3 ⊢ (P × P) ∈ V |
| 3 | 2, 2 | xpex 4779 | . 2 ⊢ ((P × P) × (P × P)) ∈ V |
| 4 | df-enr 7810 | . . 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 4738 | . . 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 3216 | . 2 ⊢ ~R ⊆ ((P × P) × (P × P)) |
| 7 | 3, 6 | ssexi 4172 | 1 ⊢ ~R ∈ V |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 = wceq 1364 ∃wex 1506 ∈ wcel 2167 Vcvv 2763 〈cop 3626 {copab 4094 × cxp 4662 (class class class)co 5925 Pcnp 7375 +P cpp 7377 ~R cer 7380 |
| 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 615 ax-in2 616 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-coll 4149 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-iinf 4625 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-reu 2482 df-rab 2484 df-v 2765 df-sbc 2990 df-csb 3085 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-int 3876 df-iun 3919 df-br 4035 df-opab 4096 df-mpt 4097 df-id 4329 df-iom 4628 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-ima 4677 df-iota 5220 df-fun 5261 df-fn 5262 df-f 5263 df-f1 5264 df-fo 5265 df-f1o 5266 df-fv 5267 df-qs 6607 df-ni 7388 df-nqqs 7432 df-inp 7550 df-enr 7810 |
| This theorem is referenced by: addsrpr 7829 mulsrpr 7830 ltsrprg 7831 0r 7834 1sr 7835 m1r 7836 addclsr 7837 mulclsr 7838 recexgt0sr 7857 prsrcl 7868 ltpsrprg 7887 mappsrprg 7888 suplocsrlemb 7890 pitonnlem2 7931 pitonn 7932 pitore 7934 recnnre 7935 |
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