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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 4118 | . 2 ⊢ (𝑥 = 𝐴 → (0 < 𝑥 ↔ 0 < 𝐴)) | |
| 2 | df-rp 10005 | . 2 ⊢ ℝ+ = {𝑥 ∈ ℝ ∣ 0 < 𝑥} | |
| 3 | 1, 2 | elrab2 2979 | 1 ⊢ (𝐴 ∈ ℝ+ ↔ (𝐴 ∈ ℝ ∧ 0 < 𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 ∈ wcel 2205 class class class wbr 4114 ℝcr 8142 0cc0 8143 < clt 8324 ℝ+crp 10004 |
| 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 2216 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-rab 2531 df-v 2817 df-un 3218 df-sn 3700 df-pr 3701 df-op 3703 df-br 4115 df-rp 10005 |
| This theorem is referenced by: elrpii 10007 nnrp 10014 rpgt0 10016 rpregt0 10018 ralrp 10026 rexrp 10027 rpaddcl 10028 rpmulcl 10029 rpdivcl 10030 rpgecl 10033 rphalflt 10034 ge0p1rp 10036 rpnegap 10037 negelrp 10038 ltsubrp 10041 ltaddrp 10042 difrp 10043 elrpd 10044 iccdil 10350 icccntr 10352 dfrp2 10647 expgt0 10958 sqrtdiv 11752 mulcn2 12022 ef01bndlem 12467 nconstwlpolem 16977 |
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