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| Mirrors > Home > MPE Home > Th. List > axresscn | Structured version Visualization version GIF version | ||
| Description: The real numbers are a subset of the complex numbers. Axiom 1 of 22 for real and complex numbers, derived from ZF set theory. This construction-dependent theorem should not be referenced directly; instead, use ax-resscn 11267. (Contributed by NM, 1-Mar-1995.) (Proof shortened by Andrew Salmon, 12-Aug-2011.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| axresscn | ⊢ ℝ ⊆ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0r 11175 | . . 3 ⊢ 0R ∈ R | |
| 2 | snssi 4745 | . . 3 ⊢ (0R ∈ R → {0R} ⊆ R) | |
| 3 | xpss2 5674 | . . 3 ⊢ ({0R} ⊆ R → (R × {0R}) ⊆ (R × R)) | |
| 4 | 1, 2, 3 | mp2b 10 | . 2 ⊢ (R × {0R}) ⊆ (R × R) |
| 5 | df-r 11220 | . 2 ⊢ ℝ = (R × {0R}) | |
| 6 | df-c 11216 | . 2 ⊢ ℂ = (R × R) | |
| 7 | 4, 5, 6 | 3sstr4i 3963 | 1 ⊢ ℝ ⊆ ℂ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2146 ⊆ wss 3899 {csn 4587 × cxp 5652 Rcnr 10960 0Rc0r 10961 ℂcc 11208 ℝcr 11209 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pow 5330 ax-pr 5394 ax-un 7758 ax-inf2 9652 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3455 df-sbc 3742 df-csb 3851 df-ss 3900 df-pss 4016 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-int 4910 df-iun 4955 df-br 5106 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5549 df-eprel 5554 df-po 5562 df-so 5563 df-fr 5607 df-we 5609 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6310 df-ord 6371 df-on 6372 df-lim 6373 df-suc 6374 df-iota 6500 df-fun 6548 df-fn 6549 df-f 6550 df-f1 6551 df-fo 6552 df-f1o 6553 df-fv 6554 df-ov 7430 df-oprab 7431 df-mpo 7432 df-om 7885 df-1st 8008 df-2nd 8009 df-frecs 8310 df-wrecs 8341 df-recs 8390 df-rdg 8429 df-1o 8487 df-oadd 8491 df-omul 8492 df-er 8728 df-ec 8730 df-qs 8734 df-ni 10967 df-pli 10968 df-mi 10969 df-lti 10970 df-plpq 11003 df-mpq 11004 df-ltpq 11005 df-enq 11006 df-nq 11007 df-erq 11008 df-plq 11009 df-mq 11010 df-1nq 11011 df-rq 11012 df-ltnq 11013 df-np 11076 df-1p 11077 df-enr 11150 df-nr 11151 df-0r 11155 df-c 11216 df-r 11220 |
| This theorem is used by: ax1cn 11244 bj-rrhatsscchat 38297 |
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