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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 8271. (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 8117 | . . 3 ⊢ 0R ∈ R | |
| 2 | snssi 3859 | . . 3 ⊢ (0R ∈ R → {0R} ⊆ R) | |
| 3 | xpss2 4886 | . . 3 ⊢ ({0R} ⊆ R → (R × {0R}) ⊆ (R × R)) | |
| 4 | 1, 2, 3 | mp2b 8 | . 2 ⊢ (R × {0R}) ⊆ (R × R) |
| 5 | df-r 8189 | . 2 ⊢ ℝ = (R × {0R}) | |
| 6 | df-c 8185 | . 2 ⊢ ℂ = (R × R) | |
| 7 | 4, 5, 6 | 3sstr4i 3289 | 1 ⊢ ℝ ⊆ ℂ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 ⊆ wss 3220 {csn 3709 × cxp 4772 Rcnr 7664 0Rc0r 7665 ℂcc 8177 ℝcr 8178 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4246 ax-sep 4249 ax-nul 4259 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-iinf 4735 |
| This proof depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-int 3971 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-tr 4230 df-eprel 4434 df-id 4438 df-po 4441 df-iso 4442 df-iord 4511 df-on 4513 df-suc 4516 df-iom 4738 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-ov 6088 df-oprab 6089 df-mpo 6090 df-1st 6374 df-2nd 6375 df-recs 6576 df-irdg 6641 df-1o 6687 df-oadd 6691 df-omul 6692 df-er 6807 df-ec 6809 df-qs 6813 df-ni 7671 df-pli 7672 df-mi 7673 df-lti 7674 df-plpq 7711 df-mpq 7712 df-enq 7714 df-nqqs 7715 df-plqqs 7716 df-mqqs 7717 df-1nqqs 7718 df-rq 7719 df-ltnqqs 7720 df-inp 7833 df-i1p 7834 df-enr 8093 df-nr 8094 df-0r 8098 df-c 8185 df-r 8189 |
| This theorem is used by: ax1cn 8228 rereceu 8256 recriota 8257 peano5nnnn 8259 |
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