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| Mirrors > Home > MPE Home > Th. List > axcnex | Structured version Visualization version GIF version | ||
| Description: The complex numbers form a set. This axiom is redundant in the presence of the other axioms (see cnexALT 12899), but the proof requires the axiom of replacement, while the derivation from the construction here does not. Thus, we can avoid ax-rep 5224 in later theorems by invoking Axiom ax-cnex 11082 instead of cnexALT 12899. Use cnex 11107 instead. (Contributed by Mario Carneiro, 17-Nov-2014.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| axcnex | ⊢ ℂ ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-c 11032 | . 2 ⊢ ℂ = (R × R) | |
| 2 | nrex1 10975 | . . 3 ⊢ R ∈ V | |
| 3 | 2, 2 | xpex 7698 | . 2 ⊢ (R × R) ∈ V |
| 4 | 1, 3 | eqeltri 2832 | 1 ⊢ ℂ ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2113 Vcvv 3440 × cxp 5622 Rcnr 10776 ℂcc 11024 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-inf2 9550 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-int 4903 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7809 df-1st 7933 df-2nd 7934 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-oadd 8401 df-omul 8402 df-er 8635 df-ec 8637 df-qs 8641 df-ni 10783 df-pli 10784 df-mi 10785 df-lti 10786 df-plpq 10819 df-mpq 10820 df-ltpq 10821 df-enq 10822 df-nq 10823 df-erq 10824 df-plq 10825 df-mq 10826 df-1nq 10827 df-rq 10828 df-ltnq 10829 df-np 10892 df-plp 10894 df-ltp 10896 df-enr 10966 df-nr 10967 df-c 11032 |
| This theorem is referenced by: (None) |
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