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| Mirrors > Home > MPE Home > Th. List > plngcp | Structured version Visualization version GIF version | ||
| Description: The plane defined by a line 𝐴 and a point 𝑅 can also be defined using a different point 𝑅 on the same plane: changes the point used to define the plane. Theorem 9.21 of [Schwabhauser] p. 74. (Contributed by Thierry Arnoux, 17-Jun-2026.) |
| Ref | Expression |
|---|---|
| plngval.p | ⊢ 𝑃 = (Base‘𝐺) |
| plngval.i | ⊢ 𝐼 = (Itv‘𝐺) |
| plngval.1 | ⊢ 𝐿 = (LineG‘𝐺) |
| plngval.e | ⊢ 𝐸 = (hlG‘𝐺) |
| plngval.g | ⊢ (𝜑 → 𝐺 ∈ TarskiG) |
| plngcp.a | ⊢ (𝜑 → 𝐴 ∈ ran 𝐿) |
| plngcp.r | ⊢ (𝜑 → 𝑅 ∈ (𝑃 ∖ 𝐴)) |
| plngcp.s | ⊢ (𝜑 → 𝑆 ∈ ((𝐴𝐸𝑅) ∖ 𝐴)) |
| Ref | Expression |
|---|---|
| plngcp | ⊢ (𝜑 → (𝐴𝐸𝑅) = (𝐴𝐸𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | plngval.p | . 2 ⊢ 𝑃 = (Base‘𝐺) | |
| 2 | plngval.i | . 2 ⊢ 𝐼 = (Itv‘𝐺) | |
| 3 | plngval.1 | . 2 ⊢ 𝐿 = (LineG‘𝐺) | |
| 4 | plngval.e | . 2 ⊢ 𝐸 = (hlG‘𝐺) | |
| 5 | plngval.g | . 2 ⊢ (𝜑 → 𝐺 ∈ TarskiG) | |
| 6 | plngcp.a | . 2 ⊢ (𝜑 → 𝐴 ∈ ran 𝐿) | |
| 7 | plngcp.r | . 2 ⊢ (𝜑 → 𝑅 ∈ (𝑃 ∖ 𝐴)) | |
| 8 | plngcp.s | . 2 ⊢ (𝜑 → 𝑆 ∈ ((𝐴𝐸𝑅) ∖ 𝐴)) | |
| 9 | eleq1w 2852 | . . . . 5 ⊢ (𝑎 = 𝑐 → (𝑎 ∈ (𝑃 ∖ 𝐴) ↔ 𝑐 ∈ (𝑃 ∖ 𝐴))) | |
| 10 | eleq1w 2852 | . . . . 5 ⊢ (𝑏 = 𝑑 → (𝑏 ∈ (𝑃 ∖ 𝐴) ↔ 𝑑 ∈ (𝑃 ∖ 𝐴))) | |
| 11 | 9, 10 | bi2anan9 649 | . . . 4 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → ((𝑎 ∈ (𝑃 ∖ 𝐴) ∧ 𝑏 ∈ (𝑃 ∖ 𝐴)) ↔ (𝑐 ∈ (𝑃 ∖ 𝐴) ∧ 𝑑 ∈ (𝑃 ∖ 𝐴)))) |
| 12 | eleq1w 2852 | . . . . . 6 ⊢ (𝑡 = 𝑠 → (𝑡 ∈ (𝑎𝐼𝑏) ↔ 𝑠 ∈ (𝑎𝐼𝑏))) | |
| 13 | 12 | cbvrexvw 3250 | . . . . 5 ⊢ (∃𝑡 ∈ 𝐴 𝑡 ∈ (𝑎𝐼𝑏) ↔ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑎𝐼𝑏)) |
| 14 | oveq12 7420 | . . . . . . 7 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (𝑎𝐼𝑏) = (𝑐𝐼𝑑)) | |
| 15 | 14 | eleq2d 2855 | . . . . . 6 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (𝑠 ∈ (𝑎𝐼𝑏) ↔ 𝑠 ∈ (𝑐𝐼𝑑))) |
| 16 | 15 | rexbidv 3195 | . . . . 5 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑎𝐼𝑏) ↔ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑐𝐼𝑑))) |
| 17 | 13, 16 | bitrid 286 | . . . 4 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (∃𝑡 ∈ 𝐴 𝑡 ∈ (𝑎𝐼𝑏) ↔ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑐𝐼𝑑))) |
| 18 | 11, 17 | anbi12d 643 | . . 3 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (((𝑎 ∈ (𝑃 ∖ 𝐴) ∧ 𝑏 ∈ (𝑃 ∖ 𝐴)) ∧ ∃𝑡 ∈ 𝐴 𝑡 ∈ (𝑎𝐼𝑏)) ↔ ((𝑐 ∈ (𝑃 ∖ 𝐴) ∧ 𝑑 ∈ (𝑃 ∖ 𝐴)) ∧ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑐𝐼𝑑)))) |
| 19 | 18 | cbvopabv 5188 | . 2 ⊢ {〈𝑎, 𝑏〉 ∣ ((𝑎 ∈ (𝑃 ∖ 𝐴) ∧ 𝑏 ∈ (𝑃 ∖ 𝐴)) ∧ ∃𝑡 ∈ 𝐴 𝑡 ∈ (𝑎𝐼𝑏))} = {〈𝑐, 𝑑〉 ∣ ((𝑐 ∈ (𝑃 ∖ 𝐴) ∧ 𝑑 ∈ (𝑃 ∖ 𝐴)) ∧ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑐𝐼𝑑))} |
| 20 | 1, 2, 3, 4, 5, 6, 7, 8, 19 | plngcplem 29024 | 1 ⊢ (𝜑 → (𝐴𝐸𝑅) = (𝐴𝐸𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1567 ∈ wcel 2149 ∃wrex 3095 ∖ cdif 3910 {copab 5177 ran crn 5663 ‘cfv 6537 (class class class)co 7411 Basecbs 17268 TarskiGcstrkg 28661 Itvcitv 28667 LineGclng 28668 hlGcplng 29012 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-rep 5242 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11155 ax-resscn 11156 ax-1cn 11157 ax-icn 11158 ax-addcl 11159 ax-addrcl 11160 ax-mulcl 11161 ax-mulrcl 11162 ax-mulcom 11163 ax-addass 11164 ax-mulass 11165 ax-distr 11166 ax-i2m1 11167 ax-1ne0 11168 ax-1rid 11169 ax-rnegex 11170 ax-rrecex 11171 ax-cnre 11172 ax-pre-lttri 11173 ax-pre-lttrn 11174 ax-pre-ltadd 11175 ax-pre-mulgt0 11176 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3465 df-sbc 3754 df-csb 3862 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-pss 3933 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-tp 4599 df-op 4601 df-uni 4877 df-int 4917 df-iun 4962 df-br 5114 df-opab 5178 df-mpt 5197 df-tr 5223 df-id 5557 df-eprel 5562 df-po 5570 df-so 5571 df-fr 5615 df-we 5617 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-rn 5673 df-res 5674 df-ima 5675 df-pred 6303 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7368 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7862 df-1st 7985 df-2nd 7986 df-frecs 8277 df-wrecs 8308 df-recs 8357 df-rdg 8396 df-1o 8452 df-oadd 8456 df-er 8693 df-map 8825 df-pm 8826 df-en 8943 df-dom 8944 df-sdom 8945 df-fin 8946 df-dju 9886 df-card 9924 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 df-sub 11442 df-neg 11443 df-nn 12233 df-2 12302 df-3 12303 df-n0 12504 df-xnn0 12577 df-z 12591 df-uz 12862 df-fz 13535 df-fzo 13682 df-hash 14366 df-word 14550 df-concat 14607 df-s1 14633 df-s2 14884 df-s3 14885 df-trkgc 28682 df-trkgb 28683 df-trkgcb 28684 df-trkgld 28686 df-trkg 28687 df-cgrg 28745 df-leg 28817 df-hlg 28835 df-mir 28891 df-rag 28932 df-perpg 28934 df-hpg 28998 df-plng 29013 |
| This theorem is referenced by: plngrotlem1 29026 lnssplnglem 29030 plng3p 29036 |
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