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| Mirrors > Home > MPE Home > Th. List > elecg | Structured version Visualization version GIF version | ||
| Description: Membership in an equivalence class. Theorem 72 of [Suppes] p. 82. (Contributed by Mario Carneiro, 9-Jul-2014.) |
| Ref | Expression |
|---|---|
| elecg | ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ [𝐵]𝑅 ↔ 𝐵𝑅𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elimasng 6105 | . . 3 ⊢ ((𝐵 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉) → (𝐴 ∈ (𝑅 “ {𝐵}) ↔ 〈𝐵, 𝐴〉 ∈ 𝑅)) | |
| 2 | 1 | ancoms 464 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ (𝑅 “ {𝐵}) ↔ 〈𝐵, 𝐴〉 ∈ 𝑅)) |
| 3 | df-ec 8757 | . . 3 ⊢ [𝐵]𝑅 = (𝑅 “ {𝐵}) | |
| 4 | 3 | eleq2i 2856 | . 2 ⊢ (𝐴 ∈ [𝐵]𝑅 ↔ 𝐴 ∈ (𝑅 “ {𝐵})) |
| 5 | df-br 5109 | . 2 ⊢ (𝐵𝑅𝐴 ↔ 〈𝐵, 𝐴〉 ∈ 𝑅) | |
| 6 | 2, 4, 5 | 3bitr4g 317 | 1 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 ∈ [𝐵]𝑅 ↔ 𝐵𝑅𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2147 {csn 4588 〈cop 4840 class class class wbr 5108 “ cima 5661 [cec 8753 |
| 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 5255 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 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-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-br 5109 df-opab 5174 df-xp 5664 df-cnv 5666 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-ec 8757 |
| This theorem is used by: ecref 8801 elec 8802 relelec 8803 ecdmn0 8808 erth 8810 erdisj 8813 qsel 8855 ecxpid 19436 ghmqusnsglem1 19545 ghmquskerlem1 19548 orbsta 19578 sylow2alem1 19882 sylow2blem1 19885 sylow3lem3 19894 efgi2 19990 rngqiprngfulem2 21659 rngqipring1 21663 tgpconncompeqg 24486 xmetec 24808 blpnfctr 24810 xmetresbl 24811 xrsblre 25186 lsmsnorb 34050 ecin0 39550 eqvrelth 39893 qsalrel 43559 |
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