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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 9862 | . . 3 ⊢ ℝ+ = {𝑥 ∈ ℝ ∣ 0 < 𝑥} | |
| 2 | ssrab2 3309 | . . 3 ⊢ {𝑥 ∈ ℝ ∣ 0 < 𝑥} ⊆ ℝ | |
| 3 | 1, 2 | eqsstri 3256 | . 2 ⊢ ℝ+ ⊆ ℝ |
| 4 | 3 | sseli 3220 | 1 ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 {crab 2512 class class class wbr 4083 ℝcr 8009 0cc0 8010 < clt 8192 ℝ+crp 9861 |
| 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 3203 df-ss 3210 df-rp 9862 |
| This theorem is referenced by: rpxr 9869 rpcn 9870 rpssre 9872 rpge0 9874 rprege0 9876 rpap0 9878 rprene0 9879 rpreap0 9880 rpaddcl 9885 rpmulcl 9886 rpdivcl 9887 rpgecl 9890 ledivge1le 9934 addlelt 9976 iccdil 10206 expnlbnd 10898 caucvgre 11507 rennim 11528 rpsqrtcl 11567 qdenre 11728 rpmaxcl 11749 rpmincl 11764 xrminrpcl 11800 2clim 11827 cn1lem 11840 climsqz 11861 climsqz2 11862 climcau 11873 efgt1 12223 ef01bndlem 12282 sinltxirr 12287 bdmet 15191 bdmopn 15193 dveflem 15415 reeff1o 15462 logleb 15564 logrpap0b 15565 cxple3 15610 rpcxpsqrt 15611 rpcxpsqrtth 15619 dceqnconst 16488 dcapnconst 16489 |
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