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| Mirrors > Home > ILE Home > Th. List > prsrpos | GIF version | ||
| Description: Mapping from a positive real to a signed real yields a result greater than zero. (Contributed by Jim Kingdon, 25-Jun-2021.) |
| Ref | Expression |
|---|---|
| prsrpos | ⊢ (𝐴 ∈ P → 0R <R [〈(𝐴 +P 1P), 1P〉] ~R ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1pr 7817 | . . . 4 ⊢ 1P ∈ P | |
| 2 | ltaddpr 7860 | . . . 4 ⊢ ((1P ∈ P ∧ 𝐴 ∈ P) → 1P<P (1P +P 𝐴)) | |
| 3 | 1, 2 | mpan 424 | . . 3 ⊢ (𝐴 ∈ P → 1P<P (1P +P 𝐴)) |
| 4 | addcomprg 7841 | . . . 4 ⊢ ((1P ∈ P ∧ 𝐴 ∈ P) → (1P +P 𝐴) = (𝐴 +P 1P)) | |
| 5 | 1, 4 | mpan 424 | . . 3 ⊢ (𝐴 ∈ P → (1P +P 𝐴) = (𝐴 +P 1P)) |
| 6 | 3, 5 | breqtrd 4119 | . 2 ⊢ (𝐴 ∈ P → 1P<P (𝐴 +P 1P)) |
| 7 | gt0srpr 8011 | . 2 ⊢ (0R <R [〈(𝐴 +P 1P), 1P〉] ~R ↔ 1P<P (𝐴 +P 1P)) | |
| 8 | 6, 7 | sylibr 134 | 1 ⊢ (𝐴 ∈ P → 0R <R [〈(𝐴 +P 1P), 1P〉] ~R ) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1398 ∈ wcel 2202 〈cop 3676 class class class wbr 4093 (class class class)co 6028 [cec 6743 Pcnp 7554 1Pc1p 7555 +P cpp 7556 <P cltp 7558 ~R cer 7559 0Rc0r 7561 <R cltr 7566 |
| 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-in1 619 ax-in2 620 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-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-nul 4220 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-iinf 4692 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-ral 2516 df-rex 2517 df-reu 2518 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-tr 4193 df-eprel 4392 df-id 4396 df-po 4399 df-iso 4400 df-iord 4469 df-on 4471 df-suc 4474 df-iom 4695 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-recs 6514 df-irdg 6579 df-1o 6625 df-2o 6626 df-oadd 6629 df-omul 6630 df-er 6745 df-ec 6747 df-qs 6751 df-ni 7567 df-pli 7568 df-mi 7569 df-lti 7570 df-plpq 7607 df-mpq 7608 df-enq 7610 df-nqqs 7611 df-plqqs 7612 df-mqqs 7613 df-1nqqs 7614 df-rq 7615 df-ltnqqs 7616 df-enq0 7687 df-nq0 7688 df-0nq0 7689 df-plq0 7690 df-mq0 7691 df-inp 7729 df-i1p 7730 df-iplp 7731 df-iltp 7733 df-enr 7989 df-nr 7990 df-ltr 7993 df-0r 7994 |
| This theorem is referenced by: (None) |
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