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Mirrors > Home > ILE Home > Th. List > lttrd | GIF version |
Description: Transitive law deduction for 'less than'. (Contributed by NM, 9-Jan-2006.) |
Ref | Expression |
---|---|
ltd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
ltd.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
letrd.3 | ⊢ (𝜑 → 𝐶 ∈ ℝ) |
lttrd.4 | ⊢ (𝜑 → 𝐴 < 𝐵) |
lttrd.5 | ⊢ (𝜑 → 𝐵 < 𝐶) |
Ref | Expression |
---|---|
lttrd | ⊢ (𝜑 → 𝐴 < 𝐶) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lttrd.4 | . 2 ⊢ (𝜑 → 𝐴 < 𝐵) | |
2 | lttrd.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 | lttr 7968 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 < 𝐵 ∧ 𝐵 < 𝐶) → 𝐴 < 𝐶)) | |
7 | 3, 4, 5, 6 | syl3anc 1228 | . 2 ⊢ (𝜑 → ((𝐴 < 𝐵 ∧ 𝐵 < 𝐶) → 𝐴 < 𝐶)) |
8 | 1, 2, 7 | mp2and 430 | 1 ⊢ (𝜑 → 𝐴 < 𝐶) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ∈ wcel 2136 class class class wbr 3981 ℝcr 7748 < clt 7929 |
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 604 ax-in2 605 ax-io 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4099 ax-pow 4152 ax-pr 4186 ax-un 4410 ax-setind 4513 ax-cnex 7840 ax-resscn 7841 ax-pre-lttrn 7863 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-fal 1349 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2296 df-ne 2336 df-nel 2431 df-ral 2448 df-rex 2449 df-rab 2452 df-v 2727 df-dif 3117 df-un 3119 df-in 3121 df-ss 3128 df-pw 3560 df-sn 3581 df-pr 3582 df-op 3584 df-uni 3789 df-br 3982 df-opab 4043 df-xp 4609 df-pnf 7931 df-mnf 7932 df-ltxr 7934 |
This theorem is referenced by: exbtwnzlemex 10181 rebtwn2z 10186 qbtwnrelemcalc 10187 expgt1 10489 ltexp2a 10503 expnlbnd2 10576 nn0ltexp2 10619 expcanlem 10624 expcan 10625 cvg1nlemcxze 10920 cvg1nlemcau 10922 cvg1nlemres 10923 recvguniqlem 10932 resqrexlemdecn 10950 resqrexlemcvg 10957 resqrexlemga 10961 qdenre 11140 reccn2ap 11250 georeclim 11450 geoisumr 11455 cvgratz 11469 efcllemp 11595 efgt1 11634 cos12dec 11704 dvdslelemd 11777 pythagtriplem13 12204 fldivp1 12274 nninfdclemlt 12380 ivthinclemlr 13215 ivthinclemur 13217 limcimolemlt 13233 reeff1olem 13292 sin0pilem1 13302 pilem3 13304 coseq0negpitopi 13357 tangtx 13359 cos02pilt1 13372 rplogcl 13400 cxplt 13436 cxple 13437 ltexp2 13460 cvgcmp2nlemabs 13871 trilpolemlt1 13880 apdifflemf 13885 |
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