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| Mirrors > Home > MPE Home > Th. List > legbtwn | Structured version Visualization version GIF version | ||
| Description: Deduce betweenness from "less than" relation. Corresponds loosely to Proposition 6.13 of [Schwabhauser] p. 45. (Contributed by Thierry Arnoux, 25-Aug-2019.) |
| Ref | Expression |
|---|---|
| legval.p | ⊢ 𝑃 = (Base‘𝐺) |
| legval.d | ⊢ − = (dist‘𝐺) |
| legval.i | ⊢ 𝐼 = (Itv‘𝐺) |
| legval.l | ⊢ ≤ = (≤G‘𝐺) |
| legval.g | ⊢ (𝜑 → 𝐺 ∈ TarskiG) |
| legid.a | ⊢ (𝜑 → 𝐴 ∈ 𝑃) |
| legid.b | ⊢ (𝜑 → 𝐵 ∈ 𝑃) |
| legtrd.c | ⊢ (𝜑 → 𝐶 ∈ 𝑃) |
| legtrd.d | ⊢ (𝜑 → 𝐷 ∈ 𝑃) |
| legbtwn.1 | ⊢ (𝜑 → (𝐴 ∈ (𝐶𝐼𝐵) ∨ 𝐵 ∈ (𝐶𝐼𝐴))) |
| legbtwn.2 | ⊢ (𝜑 → (𝐶 − 𝐴) ≤ (𝐶 − 𝐵)) |
| Ref | Expression |
|---|---|
| legbtwn | ⊢ (𝜑 → 𝐴 ∈ (𝐶𝐼𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpr 484 | . 2 ⊢ ((𝜑 ∧ 𝐴 ∈ (𝐶𝐼𝐵)) → 𝐴 ∈ (𝐶𝐼𝐵)) | |
| 2 | legval.p | . . . . 5 ⊢ 𝑃 = (Base‘𝐺) | |
| 3 | legval.d | . . . . 5 ⊢ − = (dist‘𝐺) | |
| 4 | legval.i | . . . . 5 ⊢ 𝐼 = (Itv‘𝐺) | |
| 5 | legval.g | . . . . . 6 ⊢ (𝜑 → 𝐺 ∈ TarskiG) | |
| 6 | 5 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐺 ∈ TarskiG) |
| 7 | legid.a | . . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝑃) | |
| 8 | 7 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐴 ∈ 𝑃) |
| 9 | legid.b | . . . . . 6 ⊢ (𝜑 → 𝐵 ∈ 𝑃) | |
| 10 | 9 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐵 ∈ 𝑃) |
| 11 | legtrd.c | . . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ 𝑃) | |
| 12 | 11 | adantr 480 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐶 ∈ 𝑃) |
| 13 | simpr 484 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐵 ∈ (𝐶𝐼𝐴)) | |
| 14 | 2, 3, 4, 6, 12, 10, 8, 13 | tgbtwncom 28509 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐵 ∈ (𝐴𝐼𝐶)) |
| 15 | 2, 3, 4, 6, 10, 12 | tgbtwntriv1 28512 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐵 ∈ (𝐵𝐼𝐶)) |
| 16 | legval.l | . . . . . . . 8 ⊢ ≤ = (≤G‘𝐺) | |
| 17 | legbtwn.2 | . . . . . . . . 9 ⊢ (𝜑 → (𝐶 − 𝐴) ≤ (𝐶 − 𝐵)) | |
| 18 | 17 | adantr 480 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → (𝐶 − 𝐴) ≤ (𝐶 − 𝐵)) |
| 19 | 2, 3, 4, 16, 6, 12, 10, 8, 13 | btwnleg 28609 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → (𝐶 − 𝐵) ≤ (𝐶 − 𝐴)) |
| 20 | 2, 3, 4, 16, 6, 12, 8, 12, 10, 18, 19 | legtri3 28611 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → (𝐶 − 𝐴) = (𝐶 − 𝐵)) |
| 21 | 2, 3, 4, 6, 12, 8, 12, 10, 20 | tgcgrcomlr 28501 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → (𝐴 − 𝐶) = (𝐵 − 𝐶)) |
| 22 | eqidd 2735 | . . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → (𝐵 − 𝐶) = (𝐵 − 𝐶)) | |
| 23 | 2, 3, 4, 6, 8, 10, 12, 10, 10, 12, 14, 15, 21, 22 | tgcgrsub 28530 | . . . . 5 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → (𝐴 − 𝐵) = (𝐵 − 𝐵)) |
| 24 | 2, 3, 4, 6, 8, 10, 10, 23 | axtgcgrid 28484 | . . . 4 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐴 = 𝐵) |
| 25 | 24, 13 | eqeltrd 2834 | . . 3 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐴 ∈ (𝐶𝐼𝐴)) |
| 26 | 24 | oveq2d 7372 | . . 3 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → (𝐶𝐼𝐴) = (𝐶𝐼𝐵)) |
| 27 | 25, 26 | eleqtrd 2836 | . 2 ⊢ ((𝜑 ∧ 𝐵 ∈ (𝐶𝐼𝐴)) → 𝐴 ∈ (𝐶𝐼𝐵)) |
| 28 | legbtwn.1 | . 2 ⊢ (𝜑 → (𝐴 ∈ (𝐶𝐼𝐵) ∨ 𝐵 ∈ (𝐶𝐼𝐴))) | |
| 29 | 1, 27, 28 | mpjaodan 960 | 1 ⊢ (𝜑 → 𝐴 ∈ (𝐶𝐼𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∨ wo 847 = wceq 1541 ∈ wcel 2113 class class class wbr 5096 ‘cfv 6490 (class class class)co 7356 Basecbs 17134 distcds 17184 TarskiGcstrkg 28448 Itvcitv 28454 ≤Gcleg 28603 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-rep 5222 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-cnex 11080 ax-resscn 11081 ax-1cn 11082 ax-icn 11083 ax-addcl 11084 ax-addrcl 11085 ax-mulcl 11086 ax-mulrcl 11087 ax-mulcom 11088 ax-addass 11089 ax-mulass 11090 ax-distr 11091 ax-i2m1 11092 ax-1ne0 11093 ax-1rid 11094 ax-rnegex 11095 ax-rrecex 11096 ax-cnre 11097 ax-pre-lttri 11098 ax-pre-lttrn 11099 ax-pre-ltadd 11100 ax-pre-mulgt0 11101 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-tp 4583 df-op 4585 df-uni 4862 df-int 4901 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-oadd 8399 df-er 8633 df-pm 8764 df-en 8882 df-dom 8883 df-sdom 8884 df-fin 8885 df-dju 9811 df-card 9849 df-pnf 11166 df-mnf 11167 df-xr 11168 df-ltxr 11169 df-le 11170 df-sub 11364 df-neg 11365 df-nn 12144 df-2 12206 df-3 12207 df-n0 12400 df-xnn0 12473 df-z 12487 df-uz 12750 df-fz 13422 df-fzo 13569 df-hash 14252 df-word 14435 df-concat 14492 df-s1 14518 df-s2 14769 df-s3 14770 df-trkgc 28469 df-trkgb 28470 df-trkgcb 28471 df-trkg 28474 df-cgrg 28532 df-leg 28604 |
| This theorem is referenced by: tgcgrsub2 28616 krippenlem 28711 |
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