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| Mirrors > Home > ILE Home > Th. List > ltletrd | GIF version | ||
| Description: Transitive law deduction for 'less than', 'less than or equal to'. (Contributed by NM, 9-Jan-2006.) |
| Ref | Expression |
|---|---|
| ltadd2d.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| ltadd2d.2 | ⊢ (𝜑 → 𝐵 ∈ ℝ) |
| ltadd2d.3 | ⊢ (𝜑 → 𝐶 ∈ ℝ) |
| ltletrd.4 | ⊢ (𝜑 → 𝐴 < 𝐵) |
| ltletrd.5 | ⊢ (𝜑 → 𝐵 ≤ 𝐶) |
| Ref | Expression |
|---|---|
| ltletrd | ⊢ (𝜑 → 𝐴 < 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ltletrd.4 | . 2 ⊢ (𝜑 → 𝐴 < 𝐵) | |
| 2 | ltletrd.5 | . 2 ⊢ (𝜑 → 𝐵 ≤ 𝐶) | |
| 3 | ltadd2d.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 4 | ltadd2d.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℝ) | |
| 5 | ltadd2d.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℝ) | |
| 6 | ltletr 8421 | . . 3 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ) → ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) | |
| 7 | 3, 4, 5, 6 | syl3anc 1278 | . 2 ⊢ (𝜑 → ((𝐴 < 𝐵 ∧ 𝐵 ≤ 𝐶) → 𝐴 < 𝐶)) |
| 8 | 1, 2, 7 | mp2and 437 | 1 ⊢ (𝜑 → 𝐴 < 𝐶) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∈ wcel 2209 class class class wbr 4131 ℝcr 8184 < clt 8366 ≤ cle 8367 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8276 ax-resscn 8277 ax-pre-ltwlin 8298 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-xp 4782 df-cnv 4784 df-pnf 8368 df-mnf 8369 df-xr 8370 df-ltxr 8371 df-le 8372 |
| This theorem is used by: lelttrdi 8761 lediv12a 9232 btwnapz 9786 rpgecl 10099 fznatpl1 10499 elfz1b 10513 exbtwnzlemstep 10698 ceiqle 10770 modqabs 10814 mulp1mod1 10822 seq3f1olemqsumk 10969 seqf1oglem1 10976 expgt1 11034 leexp2a 11049 bernneq3 11120 expnbnd 11121 nn0opthlem2d 11180 cvg1nlemres 11772 resqrexlemlo 11800 resqrexlemnmsq 11804 resqrexlemga 11810 abssubap0 11878 icodiamlt 11968 rpmaxcl 12011 reccn2ap 12103 divcnv 12288 cvgratnnlembern 12314 cvgratnnlemabsle 12318 fprodntrivap 12375 efcllemp 12449 sin01bnd 12548 cos01bnd 12549 sin01gt0 12553 cos12dec 12559 eirraplem 12568 dvdslelemd 12634 bitsmod 12747 bitsinv1lem 12752 dvdsbnd 12757 isprm5 12945 sqrtrirr 13013 1arith 13174 2expltfac 13247 znnen 13346 nninfdclemp1 13398 cnopnap 15854 dedekindeulemlu 15864 suplociccreex 15867 dedekindicclemlu 15873 dedekindicc 15876 ivthinclemlopn 15879 hoverb 15891 limcimolemlt 15907 limccnp2lem 15919 coseq00topi 16079 cosordlem 16094 logdivlti 16128 logdivlt 16141 logdivle 16142 birthdaylem3 16244 pellexlem2 16247 ppiqfi 16259 chtqrpcl 16296 ppiqltx 16298 chtqub 16313 bpos1 16327 bposlem1 16328 bposlem2 16329 bposlem6 16333 gausslemma2dlem0c 16392 lgsquadlem1 16418 clwwlkext2edg 16885 |
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