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| Mirrors > Home > ILE Home > Th. List > elrp | GIF version | ||
| Description: Membership in the set of positive reals. (Contributed by NM, 27-Oct-2007.) |
| Ref | Expression |
|---|---|
| elrp | ⊢ (𝐴 ∈ ℝ+ ↔ (𝐴 ∈ ℝ ∧ 0 < 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | breq2 4090 | . 2 ⊢ (𝑥 = 𝐴 → (0 < 𝑥 ↔ 0 < 𝐴)) | |
| 2 | df-rp 9879 | . 2 ⊢ ℝ+ = {𝑥 ∈ ℝ ∣ 0 < 𝑥} | |
| 3 | 1, 2 | elrab2 2963 | 1 ⊢ (𝐴 ∈ ℝ+ ↔ (𝐴 ∈ ℝ ∧ 0 < 𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 ∈ wcel 2200 class class class wbr 4086 ℝcr 8021 0cc0 8022 < clt 8204 ℝ+crp 9878 |
| 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-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rab 2517 df-v 2802 df-un 3202 df-sn 3673 df-pr 3674 df-op 3676 df-br 4087 df-rp 9879 |
| This theorem is referenced by: elrpii 9881 nnrp 9888 rpgt0 9890 rpregt0 9892 ralrp 9900 rexrp 9901 rpaddcl 9902 rpmulcl 9903 rpdivcl 9904 rpgecl 9907 rphalflt 9908 ge0p1rp 9910 rpnegap 9911 negelrp 9912 ltsubrp 9915 ltaddrp 9916 difrp 9917 elrpd 9918 iccdil 10223 icccntr 10225 dfrp2 10513 expgt0 10824 sqrtdiv 11593 mulcn2 11863 ef01bndlem 12307 nconstwlpolem 16605 |
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