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| Mirrors > Home > MPE Home > Th. List > tgbtwncom | Structured version Visualization version GIF version | ||
| Description: Betweenness commutes. Theorem 3.2 of [Schwabhauser] p. 30. (Contributed by Thierry Arnoux, 15-Mar-2019.) |
| Ref | Expression |
|---|---|
| tkgeom.p | ⊢ 𝑃 = (Base‘𝐺) |
| tkgeom.d | ⊢ − = (dist‘𝐺) |
| tkgeom.i | ⊢ 𝐼 = (Itv‘𝐺) |
| tkgeom.g | ⊢ (𝜑 → 𝐺 ∈ TarskiG) |
| tgbtwntriv2.1 | ⊢ (𝜑 → 𝐴 ∈ 𝑃) |
| tgbtwntriv2.2 | ⊢ (𝜑 → 𝐵 ∈ 𝑃) |
| tgbtwncom.3 | ⊢ (𝜑 → 𝐶 ∈ 𝑃) |
| tgbtwncom.4 | ⊢ (𝜑 → 𝐵 ∈ (𝐴𝐼𝐶)) |
| Ref | Expression |
|---|---|
| tgbtwncom | ⊢ (𝜑 → 𝐵 ∈ (𝐶𝐼𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tkgeom.p | . . . 4 ⊢ 𝑃 = (Base‘𝐺) | |
| 2 | tkgeom.d | . . . 4 ⊢ − = (dist‘𝐺) | |
| 3 | tkgeom.i | . . . 4 ⊢ 𝐼 = (Itv‘𝐺) | |
| 4 | tkgeom.g | . . . . 5 ⊢ (𝜑 → 𝐺 ∈ TarskiG) | |
| 5 | 4 | ad2antrr 739 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) → 𝐺 ∈ TarskiG) |
| 6 | tgbtwntriv2.2 | . . . . 5 ⊢ (𝜑 → 𝐵 ∈ 𝑃) | |
| 7 | 6 | ad2antrr 739 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) → 𝐵 ∈ 𝑃) |
| 8 | simplr 781 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) → 𝑥 ∈ 𝑃) | |
| 9 | simprl 783 | . . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) → 𝑥 ∈ (𝐵𝐼𝐵)) | |
| 10 | 1, 2, 3, 5, 7, 8, 9 | axtgbtwnid 28958 | . . 3 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) → 𝐵 = 𝑥) |
| 11 | simprr 785 | . . 3 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) → 𝑥 ∈ (𝐶𝐼𝐴)) | |
| 12 | 10, 11 | eqeltrd 2864 | . 2 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) → 𝐵 ∈ (𝐶𝐼𝐴)) |
| 13 | tgbtwntriv2.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑃) | |
| 14 | tgbtwncom.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ 𝑃) | |
| 15 | tgbtwncom.4 | . . 3 ⊢ (𝜑 → 𝐵 ∈ (𝐴𝐼𝐶)) | |
| 16 | 1, 2, 3, 4, 6, 14 | tgbtwntriv2 28980 | . . 3 ⊢ (𝜑 → 𝐶 ∈ (𝐵𝐼𝐶)) |
| 17 | 1, 2, 3, 4, 13, 6, 14, 6, 14, 15, 16 | axtgpasch 28959 | . 2 ⊢ (𝜑 → ∃𝑥 ∈ 𝑃 (𝑥 ∈ (𝐵𝐼𝐵) ∧ 𝑥 ∈ (𝐶𝐼𝐴))) |
| 18 | 12, 17 | r19.29a 3174 | 1 ⊢ (𝜑 → 𝐵 ∈ (𝐶𝐼𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ‘cfv 6558 (class class class)co 7443 Basecbs 17416 distcds 17466 TarskiGcstrkg 28919 Itvcitv 28925 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-nul 5263 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-sbc 3743 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-iota 6512 df-fv 6566 df-ov 7446 df-trkgc 28940 df-trkgb 28941 df-trkgcb 28942 df-trkg 28945 |
| This theorem is used by: tgbtwncomb 28982 tgbtwntriv1 28984 tgbtwnexch3 28987 tgbtwnexch2 28989 tgbtwnouttr 28990 tgbtwnexch 28991 tgtrisegint 28992 tgifscgr 29001 tgcgrxfr 29011 tgbtwnconn1lem1 29065 tgbtwnconn1lem2 29066 tgbtwnconn1lem3 29067 tgbtwnconn1 29068 tgbtwnconn3 29070 tgbtwnconn22 29072 tgbtwnconnln1 29073 tgbtwnconnln2 29074 legtri3 29083 legtrid 29084 legbtwn 29087 tgcgrsub2 29088 hlln 29103 btwnhl2 29109 btwnhl 29110 hlcgrex 29112 hlcgreulem 29113 tglineeltr 29129 mirreu3 29156 mirmir 29164 mireq 29167 miriso 29172 mirconn 29180 mirbtwnhl 29182 mirhl2 29183 mircgrextend 29184 miduniq 29187 colmid 29190 krippenlem 29192 krippen 29193 midexlem 29194 ragflat 29209 ragcgr 29212 footexALT 29223 footexlem1 29224 footexlem2 29225 colperpexlem1 29236 colperpexlem3 29238 mideulem2 29240 opphllem 29241 midex 29243 oppcom 29250 opphllem5 29257 opphllem6 29258 oppmir 29262 outpasch 29263 hlpasch 29264 lnopp2hpgb 29271 colhp 29278 lnincplng 29292 plngrotlem1 29295 plngrotlem2 29296 midbtwn 29314 hypcgrlem1 29335 hypcgrlem2 29336 flatcgra 29362 cgrabtwn 29364 cgracol 29366 dfcgra2 29368 sacgr 29369 oacgr 29370 ragsupplcgra 29375 tgaaddcpbllem1 29379 tgaaddcpbllem2 29380 tgaaddcpbl2 29383 inagswap 29390 inaghl 29394 angmgmaddov1lem 29416 angmgmaddov2lem 29417 angmgmaddcpbl 29420 prlngmolem1 29460 prlngsymquadopp 29473 inagbtwn 33078 tgextancd 33098 tgextahpl 33099 tgextalem1inag 33100 tgextamirnhl 33102 tgextaoa 33105 tgaasexc 33111 |
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