| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 9888 | . . 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 8030 0cc0 8031 < clt 8213 ℝ+crp 9887 |
| 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 9888 |
| This theorem is referenced by: rpxr 9895 rpcn 9896 rpssre 9898 rpge0 9900 rprege0 9902 rpap0 9904 rprene0 9905 rpreap0 9906 rpaddcl 9911 rpmulcl 9912 rpdivcl 9913 rpgecl 9916 ledivge1le 9960 addlelt 10002 iccdil 10232 expnlbnd 10925 caucvgre 11541 rennim 11562 rpsqrtcl 11601 qdenre 11762 rpmaxcl 11783 rpmincl 11798 xrminrpcl 11834 2clim 11861 cn1lem 11874 climsqz 11895 climsqz2 11896 climcau 11907 efgt1 12257 ef01bndlem 12316 sinltxirr 12321 bdmet 15225 bdmopn 15227 dveflem 15449 reeff1o 15496 logleb 15598 logrpap0b 15599 cxple3 15644 rpcxpsqrt 15645 rpcxpsqrtth 15653 dceqnconst 16664 dcapnconst 16665 |
| Copyright terms: Public domain | W3C validator |