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| Mirrors > Home > MPE Home > Th. List > enrex | Structured version Visualization version GIF version | ||
| Description: The equivalence relation for signed reals exists. (Contributed by NM, 25-Jul-1995.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| enrex | ⊢ ~R ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | npex 11098 | . . . 4 ⊢ P ∈ V | |
| 2 | 1, 1 | xpex 7791 | . . 3 ⊢ (P × P) ∈ V |
| 3 | 2, 2 | xpex 7791 | . 2 ⊢ ((P × P) × (P × P)) ∈ V |
| 4 | df-enr 11167 | . . 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 5748 | . . 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 3959 | . 2 ⊢ ~R ⊆ ((P × P) × (P × P)) |
| 7 | 3, 6 | ssexi 5288 | 1 ⊢ ~R ∈ V |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 = wceq 1570 ∃wex 1812 ∈ wcel 2147 Vcvv 3454 〈cop 4838 {copab 5170 × cxp 5653 (class class class)co 7443 Pcnp 10971 +P cpp 10973 ~R cer 10976 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-inf2 9669 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-tr 5216 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-om 7902 df-ni 10984 df-nq 11024 df-np 11093 df-enr 11167 |
| This theorem is used by: addsrpr 11187 mulsrpr 11188 ltsrpr 11189 0r 11192 1sr 11193 m1r 11194 addclsr 11195 mulclsr 11196 recexsrlem 11215 |
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