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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 2853 | . . . . 5 ⊢ (𝑎 = 𝑐 → (𝑎 ∈ (𝑃 ∖ 𝐴) ↔ 𝑐 ∈ (𝑃 ∖ 𝐴))) | |
| 10 | eleq1w 2853 | . . . . 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 2853 | . . . . . 6 ⊢ (𝑡 = 𝑠 → (𝑡 ∈ (𝑎𝐼𝑏) ↔ 𝑠 ∈ (𝑎𝐼𝑏))) | |
| 13 | 12 | cbvrexvw 3251 | . . . . 5 ⊢ (∃𝑡 ∈ 𝐴 𝑡 ∈ (𝑎𝐼𝑏) ↔ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑎𝐼𝑏)) |
| 14 | oveq12 7423 | . . . . . . 7 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (𝑎𝐼𝑏) = (𝑐𝐼𝑑)) | |
| 15 | 14 | eleq2d 2856 | . . . . . 6 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (𝑠 ∈ (𝑎𝐼𝑏) ↔ 𝑠 ∈ (𝑐𝐼𝑑))) |
| 16 | 15 | rexbidv 3196 | . . . . 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 5189 | . 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 29045 | 1 ⊢ (𝜑 → (𝐴𝐸𝑅) = (𝐴𝐸𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1568 ∈ wcel 2150 ∃wrex 3096 ∖ cdif 3910 {copab 5178 ran crn 5666 ‘cfv 6540 (class class class)co 7414 Basecbs 17272 TarskiGcstrkg 28676 Itvcitv 28682 LineGclng 28683 hlGcplng 29033 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2152 ax-9 2160 ax-10 2183 ax-11 2199 ax-12 2220 ax-ext 2742 ax-rep 5243 ax-sep 5262 ax-nul 5274 ax-pow 5340 ax-pr 5408 ax-un 7736 ax-cnex 11159 ax-resscn 11160 ax-1cn 11161 ax-icn 11162 ax-addcl 11163 ax-addrcl 11164 ax-mulcl 11165 ax-mulrcl 11166 ax-mulcom 11167 ax-addass 11168 ax-mulass 11169 ax-distr 11170 ax-i2m1 11171 ax-1ne0 11172 ax-1rid 11173 ax-rnegex 11174 ax-rrecex 11175 ax-cnre 11176 ax-pre-lttri 11177 ax-pre-lttrn 11178 ax-pre-ltadd 11179 ax-pre-mulgt0 11180 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-nf 1812 df-sb 2099 df-mo 2574 df-eu 2604 df-clab 2749 df-cleq 2762 df-clel 2845 df-nfc 2919 df-ne 2966 df-nel 3072 df-ral 3087 df-rex 3097 df-rmo 3376 df-reu 3377 df-rab 3424 df-v 3464 df-sbc 3753 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 4878 df-int 4918 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5560 df-eprel 5565 df-po 5573 df-so 5574 df-fr 5618 df-we 5620 df-xp 5671 df-rel 5672 df-cnv 5673 df-co 5674 df-dm 5675 df-rn 5676 df-res 5677 df-ima 5678 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7371 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7866 df-1st 7989 df-2nd 7990 df-frecs 8281 df-wrecs 8312 df-recs 8361 df-rdg 8400 df-1o 8456 df-oadd 8460 df-er 8697 df-map 8829 df-pm 8830 df-en 8947 df-dom 8948 df-sdom 8949 df-fin 8950 df-dju 9890 df-card 9928 df-pnf 11248 df-mnf 11249 df-xr 11250 df-ltxr 11251 df-le 11252 df-sub 11446 df-neg 11447 df-nn 12237 df-2 12306 df-3 12307 df-n0 12508 df-xnn0 12581 df-z 12595 df-uz 12866 df-fz 13539 df-fzo 13686 df-hash 14370 df-word 14554 df-concat 14611 df-s1 14637 df-s2 14888 df-s3 14889 df-trkgc 28697 df-trkgb 28698 df-trkgcb 28699 df-trkgld 28701 df-trkg 28702 df-cgrg 28760 df-leg 28832 df-hlg 28850 df-mir 28910 df-rag 28953 df-perpg 28955 df-hpg 29019 df-plng 29034 |
| This theorem is referenced by: plngrotlem1 29047 lnssplnglem 29051 plng3p 29057 |
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