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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 9889 | . . 3 ⊢ ℝ+ = {𝑥 ∈ ℝ ∣ 0 < 𝑥} | |
| 2 | ssrab2 3312 | . . 3 ⊢ {𝑥 ∈ ℝ ∣ 0 < 𝑥} ⊆ ℝ | |
| 3 | 1, 2 | eqsstri 3259 | . 2 ⊢ ℝ+ ⊆ ℝ |
| 4 | 3 | sseli 3223 | 1 ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 {crab 2514 class class class wbr 4088 ℝcr 8031 0cc0 8032 < clt 8214 ℝ+crp 9888 |
| 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 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-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-rab 2519 df-in 3206 df-ss 3213 df-rp 9889 |
| This theorem is referenced by: rpxr 9896 rpcn 9897 rpssre 9899 rpge0 9901 rprege0 9903 rpap0 9905 rprene0 9906 rpreap0 9907 rpaddcl 9912 rpmulcl 9913 rpdivcl 9914 rpgecl 9917 ledivge1le 9961 addlelt 10003 iccdil 10233 expnlbnd 10927 caucvgre 11546 rennim 11567 rpsqrtcl 11606 qdenre 11767 rpmaxcl 11788 rpmincl 11803 xrminrpcl 11839 2clim 11866 cn1lem 11879 climsqz 11900 climsqz2 11901 climcau 11912 efgt1 12263 ef01bndlem 12322 sinltxirr 12327 bdmet 15232 bdmopn 15234 dveflem 15456 reeff1o 15503 logleb 15605 logrpap0b 15606 cxple3 15651 rpcxpsqrt 15652 rpcxpsqrtth 15660 dceqnconst 16691 dcapnconst 16692 |
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