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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 9987 | . . 3 ⊢ ℝ+ = {𝑥 ∈ ℝ ∣ 0 < 𝑥} | |
| 2 | ssrab2 3323 | . . 3 ⊢ {𝑥 ∈ ℝ ∣ 0 < 𝑥} ⊆ ℝ | |
| 3 | 1, 2 | eqsstri 3270 | . 2 ⊢ ℝ+ ⊆ ℝ |
| 4 | 3 | sseli 3234 | 1 ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2203 {crab 2524 class class class wbr 4109 ℝcr 8126 0cc0 8127 < clt 8308 ℝ+crp 9986 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-rab 2529 df-in 3217 df-ss 3224 df-rp 9987 |
| This theorem is referenced by: rpxr 9994 rpcn 9995 rpssre 9997 rpge0 9999 rprege0 10001 rpap0 10003 rprene0 10004 rpreap0 10005 rpaddcl 10010 rpmulcl 10011 rpdivcl 10012 rpgecl 10015 ledivge1le 10059 addlelt 10101 iccdil 10331 expnlbnd 11026 caucvgre 11666 rennim 11687 rpsqrtcl 11726 qdenre 11887 rpmaxcl 11908 rpmincl 11923 xrminrpcl 11959 2clim 11986 cn1lem 11999 climsqz 12020 climsqz2 12021 climcau 12032 efgt1 12383 ef01bndlem 12442 sinltxirr 12447 bdmet 15367 bdmopn 15369 dveflem 15591 reeff1o 15638 logleb 15740 logrpap0b 15741 cxple3 15786 rpcxpsqrt 15787 rpcxpsqrtth 15795 dceqnconst 16846 dcapnconst 16847 |
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