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Mirrors > Home > ILE Home > Th. List > lelttrd | GIF version |
Description: Transitive law deduction for 'less than or equal to', 'less than'. (Contributed by NM, 8-Jan-2006.) |
Ref | Expression |
---|---|
ltd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
ltd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
letrd.3 | ⊢ (𝜑 → 𝐶 ∈ ℝ) |
lelttrd.4 | ⊢ (𝜑 → 𝐴 ≤ 𝐵) |
lelttrd.5 | ⊢ (𝜑 → 𝐵 < 𝐶) |
Ref | Expression |
---|---|
lelttrd | ⊢ (𝜑 → 𝐴 < 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lelttrd.4 | . 2 ⊢ (𝜑 → 𝐴 ≤ 𝐵) | |
2 | lelttrd.5 | . 2 ⊢ (𝜑 → 𝐵 < 𝐶) | |
3 | ltd.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
4 | ltd.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
5 | letrd.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ) | |
6 | lelttr 7845 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 ≤ 𝐵 ∧ 𝐵 < 𝐶) → 𝐴 < 𝐶)) | |
7 | 3, 4, 5, 6 | syl3anc 1216 | . 2 ⊢ (𝜑 → ((𝐴 ≤ 𝐵 ∧ 𝐵 < 𝐶) → 𝐴 < 𝐶)) |
8 | 1, 2, 7 | mp2and 429 | 1 ⊢ (𝜑 → 𝐴 < 𝐶) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∈ wcel 1480 class class class wbr 3924 ℝcr 7612 < clt 7793 ≤ cle 7794 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 ax-un 4350 ax-setind 4447 ax-cnex 7704 ax-resscn 7705 ax-pre-ltwlin 7726 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ne 2307 df-nel 2402 df-ral 2419 df-rex 2420 df-rab 2423 df-v 2683 df-dif 3068 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-br 3925 df-opab 3985 df-xp 4540 df-cnv 4542 df-pnf 7795 df-mnf 7796 df-xr 7797 df-ltxr 7798 df-le 7799 |
This theorem is referenced by: lt2msq1 8636 ledivp1 8654 suprzclex 9142 btwnapz 9174 ge0p1rp 9466 elfzolt3 9927 exbtwnz 10021 btwnzge0 10066 flltdivnn0lt 10070 modqid 10115 mulqaddmodid 10130 modqsubdir 10159 nn0opthlem2d 10460 bcp1nk 10501 zfz1isolemiso 10575 resqrexlemover 10775 resqrexlemnm 10783 resqrexlemcvg 10784 resqrexlemglsq 10787 resqrexlemga 10788 abslt 10853 abs3lem 10876 fzomaxdiflem 10877 icodiamlt 10945 maxltsup 10983 reccn2ap 11075 expcnvre 11265 absltap 11271 cvgratnnlemfm 11291 cvgratnnlemrate 11292 mertenslemi1 11297 ef01bndlem 11452 sin01bnd 11453 cos01bnd 11454 eirraplem 11472 dvdslelemd 11530 sqrt2irrap 11847 ssblex 12589 dedekindeulemuub 12753 dedekindeulemlu 12757 suplociccreex 12760 dedekindicclemuub 12762 dedekindicclemlu 12766 dedekindicc 12769 ivthinclemuopn 12774 dveflem 12844 coseq00topi 12905 coseq0negpitopi 12906 cosordlem 12919 qdencn 13211 cvgcmp2nlemabs 13216 |
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