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| Mirrors > Home > ILE Home > Th. List > posdifd | GIF version | ||
| Description: Comparison of two numbers whose difference is positive. (Contributed by Mario Carneiro, 27-May-2016.) |
| Ref | Expression |
|---|---|
| leidd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltnegd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| Ref | Expression |
|---|---|
| posdifd | ⊢ (𝜑 → (𝐴 < 𝐵 ↔ 0 < (𝐵 − 𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | leidd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 2 | ltnegd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 3 | posdif 8625 | . 2 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝐴 < 𝐵 ↔ 0 < (𝐵 − 𝐴))) | |
| 4 | 1, 2, 3 | syl2anc 411 | 1 ⊢ (𝜑 → (𝐴 < 𝐵 ↔ 0 < (𝐵 − 𝐴))) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 ∈ wcel 2200 class class class wbr 4086 (class class class)co 6013 ℝcr 8021 0cc0 8022 < clt 8204 − cmin 8340 |
| 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 617 ax-in2 618 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-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-addcom 8122 ax-addass 8124 ax-distr 8126 ax-i2m1 8127 ax-0id 8130 ax-rnegex 8131 ax-cnre 8133 ax-pre-ltadd 8138 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rab 2517 df-v 2802 df-sbc 3030 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-iota 5284 df-fun 5326 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-pnf 8206 df-mnf 8207 df-ltxr 8209 df-sub 8342 df-neg 8343 |
| This theorem is referenced by: possumd 8739 ltmul1a 8761 ztri3or 9512 qbtwnre 10506 expnbnd 10915 resqrexlemover 11561 fsumlt 12015 cvgratnnlembern 12074 cvgratnnlemsumlt 12079 cvgratnnlemfm 12080 cvgratnnlemrate 12081 cvgratnn 12082 sin01gt0 12313 cos12dec 12319 nno 12457 pythagtriplem10 12832 ivthinclemlopn 15350 ivthinclemuopn 15352 ivthreinc 15359 sin0pilem1 15495 cosordlem 15563 cosq34lt1 15564 lgsquadlem1 15796 clwwlkext2edg 16217 iooref1o 16574 trilpolemlt1 16581 trirec0 16584 |
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