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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 8415 | . . 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 4130 ℝcr 8178 < clt 8360 ≤ cle 8361 |
| 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 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-pre-ltwlin 8292 |
| 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 4131 df-opab 4193 df-xp 4780 df-cnv 4782 df-pnf 8362 df-mnf 8363 df-xr 8364 df-ltxr 8365 df-le 8366 |
| This theorem is used by: lelttrdi 8754 lediv12a 9224 btwnapz 9776 rpgecl 10083 fznatpl1 10483 elfz1b 10497 exbtwnzlemstep 10682 ceiqle 10750 modqabs 10794 mulp1mod1 10802 seq3f1olemqsumk 10949 seqf1oglem1 10956 expgt1 11014 leexp2a 11029 bernneq3 11100 expnbnd 11101 nn0opthlem2d 11159 cvg1nlemres 11751 resqrexlemlo 11779 resqrexlemnmsq 11783 resqrexlemga 11789 abssubap0 11856 icodiamlt 11946 rpmaxcl 11989 reccn2ap 12079 divcnv 12264 cvgratnnlembern 12290 cvgratnnlemabsle 12294 fprodntrivap 12351 efcllemp 12425 sin01bnd 12524 cos01bnd 12525 sin01gt0 12529 cos12dec 12535 eirraplem 12544 dvdslelemd 12610 bitsmod 12723 bitsinv1lem 12728 dvdsbnd 12733 isprm5 12920 1arith 13146 2expltfac 13218 znnen 13289 nninfdclemp1 13341 cnopnap 15712 dedekindeulemlu 15722 suplociccreex 15725 dedekindicclemlu 15731 dedekindicc 15734 ivthinclemlopn 15737 hoverb 15749 limcimolemlt 15765 limccnp2lem 15777 coseq00topi 15936 cosordlem 15950 logdivlti 15982 birthdaylem3 16089 pellexlem2 16092 gausslemma2dlem0c 16170 lgsquadlem1 16196 clwwlkext2edg 16663 |
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