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| Mirrors > Home > ILE Home > Th. List > axresscn | GIF version | ||
| Description: The real numbers are a subset of the complex numbers. Axiom for real and complex numbers, derived from set theory. This construction-dependent theorem should not be referenced directly; instead, use ax-resscn 8123. (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 7969 | . . 3 ⊢ 0R ∈ R | |
| 2 | snssi 3817 | . . 3 ⊢ (0R ∈ R → {0R} ⊆ R) | |
| 3 | xpss2 4837 | . . 3 ⊢ ({0R} ⊆ R → (R × {0R}) ⊆ (R × R)) | |
| 4 | 1, 2, 3 | mp2b 8 | . 2 ⊢ (R × {0R}) ⊆ (R × R) |
| 5 | df-r 8041 | . 2 ⊢ ℝ = (R × {0R}) | |
| 6 | df-c 8037 | . 2 ⊢ ℂ = (R × R) | |
| 7 | 4, 5, 6 | 3sstr4i 3268 | 1 ⊢ ℝ ⊆ ℂ |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 ⊆ wss 3200 {csn 3669 × cxp 4723 Rcnr 7516 0Rc0r 7517 ℂcc 8029 ℝcr 8030 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4204 ax-sep 4207 ax-nul 4215 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-iinf 4686 |
| This theorem depends on definitions: df-bi 117 df-dc 842 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-ral 2515 df-rex 2516 df-reu 2517 df-rab 2519 df-v 2804 df-sbc 3032 df-csb 3128 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-nul 3495 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-int 3929 df-iun 3972 df-br 4089 df-opab 4151 df-mpt 4152 df-tr 4188 df-eprel 4386 df-id 4390 df-po 4393 df-iso 4394 df-iord 4463 df-on 4465 df-suc 4468 df-iom 4689 df-xp 4731 df-rel 4732 df-cnv 4733 df-co 4734 df-dm 4735 df-rn 4736 df-res 4737 df-ima 4738 df-iota 5286 df-fun 5328 df-fn 5329 df-f 5330 df-f1 5331 df-fo 5332 df-f1o 5333 df-fv 5334 df-ov 6020 df-oprab 6021 df-mpo 6022 df-1st 6302 df-2nd 6303 df-recs 6470 df-irdg 6535 df-1o 6581 df-oadd 6585 df-omul 6586 df-er 6701 df-ec 6703 df-qs 6707 df-ni 7523 df-pli 7524 df-mi 7525 df-lti 7526 df-plpq 7563 df-mpq 7564 df-enq 7566 df-nqqs 7567 df-plqqs 7568 df-mqqs 7569 df-1nqqs 7570 df-rq 7571 df-ltnqqs 7572 df-inp 7685 df-i1p 7686 df-enr 7945 df-nr 7946 df-0r 7950 df-c 8037 df-r 8041 |
| This theorem is referenced by: ax1cn 8080 rereceu 8108 recriota 8109 peano5nnnn 8111 |
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