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Related theorems GIF version |
| Description: Technical trick to permit reuse of some of our previous equivalence class lemmas to prove arithmetic operation laws in ℂ from those in R. Note that converse epsilon is not an equivalence relation, but the lemmas we reuse do not require it. |
| Ref | Expression |
|---|---|
| dfcnqs | ⊢ ℂ = ((R × R) / ◡E) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-c 4034 | . 2 ⊢ ℂ = (R × R) | |
| 2 | srex 397D | . . . 4 ⊢ R ∈ V | |
| 3 | 2, 2 | xpex 2488 | |
| 4 | 3 | qsid 3237 | . 2 ⊢ ((R × R) / ◡E) = (R × R) |
| 5 | 1, 4 | eqtr4 1122 | 1 ⊢ ℂ = ((R × R) / ◡E) |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1091 Ecep 2056 × cxp 2408 ◡ccnv 2409 / cqs 3199 Rcnr 3787 ℂcc 4026 |
| This theorem is referenced by: axaddcom 4070 axmulcom 4071 axaddass 4072 axmulass 4073 axdistr 4074 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-un 1076 ax-pow 1077 ax-reg 1078 ax-inf 1079 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-3or 582 df-3an 583 df-ex 679 df-sb 853 df-eu 1009 df-mo 1010 df-clab 1093 df-cleq 1097 df-clel 1099 df-ne 1192 df-ral 1205 df-rex 1206 df-rab 1208 df-v 1349 df-sbc 1441 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-pss 1494 df-nul 1708 df-if 1777 df-pw 1799 df-sn 1811 df-pr 1812 df-tp 1814 df-op 1815 df-uni 1920 df-tr 2042 df-br 2063 df-opab 2098 df-eprel 2122 df-id 2125 df-po 2128 df-so 2138 df-fr 2169 df-we 2186 df-ord 2202 df-on 2203 df-lim 2204 df-suc 2205 df-om 2373 df-xp 2424 df-rel 2425 df-cnv 2426 df-co 2427 df-dm 2428 df-rn 2429 df-res 2430 df-ima 2431 df-fun 2432 df-fn 2433 df-f 2434 df-f1 2435 df-fv 2438 df-rdg 2970 df-ec 3202 df-qs 3205 df-ni 3794 df-nq 3832 df-np 3880 df-nr 3961 df-c 4034 |