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| Mirrors > Home > ILE Home > Th. List > rpre | GIF version | ||
| Description: A positive real is a real. (Contributed by NM, 27-Oct-2007.) |
| Ref | Expression |
|---|---|
| rpre | ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-rp 9879 | . . 3 ⊢ ℝ+ = {𝑥 ∈ ℝ ∣ 0 < 𝑥} | |
| 2 | ssrab2 3310 | . . 3 ⊢ {𝑥 ∈ ℝ ∣ 0 < 𝑥} ⊆ ℝ | |
| 3 | 1, 2 | eqsstri 3257 | . 2 ⊢ ℝ+ ⊆ ℝ |
| 4 | 3 | sseli 3221 | 1 ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 {crab 2512 class class class wbr 4086 ℝcr 8021 0cc0 8022 < clt 8204 ℝ+crp 9878 |
| 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-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rab 2517 df-in 3204 df-ss 3211 df-rp 9879 |
| This theorem is referenced by: rpxr 9886 rpcn 9887 rpssre 9889 rpge0 9891 rprege0 9893 rpap0 9895 rprene0 9896 rpreap0 9897 rpaddcl 9902 rpmulcl 9903 rpdivcl 9904 rpgecl 9907 ledivge1le 9951 addlelt 9993 iccdil 10223 expnlbnd 10916 caucvgre 11532 rennim 11553 rpsqrtcl 11592 qdenre 11753 rpmaxcl 11774 rpmincl 11789 xrminrpcl 11825 2clim 11852 cn1lem 11865 climsqz 11886 climsqz2 11887 climcau 11898 efgt1 12248 ef01bndlem 12307 sinltxirr 12312 bdmet 15216 bdmopn 15218 dveflem 15440 reeff1o 15487 logleb 15589 logrpap0b 15590 cxple3 15635 rpcxpsqrt 15636 rpcxpsqrtth 15644 dceqnconst 16600 dcapnconst 16601 |
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