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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 9933 | . . 3 ⊢ ℝ+ = {𝑥 ∈ ℝ ∣ 0 < 𝑥} | |
| 2 | ssrab2 3313 | . . 3 ⊢ {𝑥 ∈ ℝ ∣ 0 < 𝑥} ⊆ ℝ | |
| 3 | 1, 2 | eqsstri 3260 | . 2 ⊢ ℝ+ ⊆ ℝ |
| 4 | 3 | sseli 3224 | 1 ⊢ (𝐴 ∈ ℝ+ → 𝐴 ∈ ℝ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 {crab 2515 class class class wbr 4093 ℝcr 8074 0cc0 8075 < clt 8256 ℝ+crp 9932 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-rab 2520 df-in 3207 df-ss 3214 df-rp 9933 |
| This theorem is referenced by: rpxr 9940 rpcn 9941 rpssre 9943 rpge0 9945 rprege0 9947 rpap0 9949 rprene0 9950 rpreap0 9951 rpaddcl 9956 rpmulcl 9957 rpdivcl 9958 rpgecl 9961 ledivge1le 10005 addlelt 10047 iccdil 10277 expnlbnd 10972 caucvgre 11604 rennim 11625 rpsqrtcl 11664 qdenre 11825 rpmaxcl 11846 rpmincl 11861 xrminrpcl 11897 2clim 11924 cn1lem 11937 climsqz 11958 climsqz2 11959 climcau 11970 efgt1 12321 ef01bndlem 12380 sinltxirr 12385 bdmet 15296 bdmopn 15298 dveflem 15520 reeff1o 15567 logleb 15669 logrpap0b 15670 cxple3 15715 rpcxpsqrt 15716 rpcxpsqrtth 15724 dceqnconst 16776 dcapnconst 16777 |
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