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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 2845 | . . . . 5 ⊢ (𝑎 = 𝑐 → (𝑎 ∈ (𝑃 ∖ 𝐴) ↔ 𝑐 ∈ (𝑃 ∖ 𝐴))) | |
| 10 | eleq1w 2845 | . . . . 5 ⊢ (𝑏 = 𝑑 → (𝑏 ∈ (𝑃 ∖ 𝐴) ↔ 𝑑 ∈ (𝑃 ∖ 𝐴))) | |
| 11 | 9, 10 | bi2anan9 647 | . . . 4 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → ((𝑎 ∈ (𝑃 ∖ 𝐴) ∧ 𝑏 ∈ (𝑃 ∖ 𝐴)) ↔ (𝑐 ∈ (𝑃 ∖ 𝐴) ∧ 𝑑 ∈ (𝑃 ∖ 𝐴)))) |
| 12 | eleq1w 2845 | . . . . . 6 ⊢ (𝑡 = 𝑠 → (𝑡 ∈ (𝑎𝐼𝑏) ↔ 𝑠 ∈ (𝑎𝐼𝑏))) | |
| 13 | 12 | cbvrexvw 3241 | . . . . 5 ⊢ (∃𝑡 ∈ 𝐴 𝑡 ∈ (𝑎𝐼𝑏) ↔ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑎𝐼𝑏)) |
| 14 | oveq12 7405 | . . . . . . 7 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (𝑎𝐼𝑏) = (𝑐𝐼𝑑)) | |
| 15 | 14 | eleq2d 2848 | . . . . . 6 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (𝑠 ∈ (𝑎𝐼𝑏) ↔ 𝑠 ∈ (𝑐𝐼𝑑))) |
| 16 | 15 | rexbidv 3186 | . . . . 5 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑎𝐼𝑏) ↔ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑐𝐼𝑑))) |
| 17 | 13, 16 | bitrid 285 | . . . 4 ⊢ ((𝑎 = 𝑐 ∧ 𝑏 = 𝑑) → (∃𝑡 ∈ 𝐴 𝑡 ∈ (𝑎𝐼𝑏) ↔ ∃𝑠 ∈ 𝐴 𝑠 ∈ (𝑐𝐼𝑑))) |
| 18 | 11, 17 | anbi12d 641 | . . 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 5173 | . 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 28989 | 1 ⊢ (𝜑 → (𝐴𝐸𝑅) = (𝐴𝐸𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1560 ∈ wcel 2142 ∃wrex 3086 ∖ cdif 3901 {copab 5162 ran crn 5648 ‘cfv 6521 (class class class)co 7396 Basecbs 17245 TarskiGcstrkg 28593 Itvcitv 28599 LineGclng 28600 hlGcplng 28977 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-resscn 11130 ax-1cn 11131 ax-icn 11132 ax-addcl 11133 ax-addrcl 11134 ax-mulcl 11135 ax-mulrcl 11136 ax-mulcom 11137 ax-addass 11138 ax-mulass 11139 ax-distr 11140 ax-i2m1 11141 ax-1ne0 11142 ax-1rid 11143 ax-rnegex 11144 ax-rrecex 11145 ax-cnre 11146 ax-pre-lttri 11147 ax-pre-lttrn 11148 ax-pre-ltadd 11149 ax-pre-mulgt0 11150 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8381 df-1o 8437 df-oadd 8441 df-er 8678 df-map 8810 df-pm 8811 df-en 8928 df-dom 8929 df-sdom 8930 df-fin 8931 df-dju 9859 df-card 9897 df-pnf 11218 df-mnf 11219 df-xr 11220 df-ltxr 11221 df-le 11222 df-sub 11416 df-neg 11417 df-nn 12211 df-2 12280 df-3 12281 df-n0 12482 df-xnn0 12555 df-z 12569 df-uz 12840 df-fz 13513 df-fzo 13660 df-hash 14344 df-word 14527 df-concat 14584 df-s1 14610 df-s2 14861 df-s3 14862 df-trkgc 28614 df-trkgb 28615 df-trkgcb 28616 df-trkgld 28618 df-trkg 28619 df-cgrg 28677 df-leg 28749 df-hlg 28767 df-mir 28823 df-rag 28864 df-perpg 28866 df-hpg 28928 df-plng 28978 |
| This theorem is referenced by: plngrotlem1 28991 lnssplnglem 28995 plng3p 28997 |
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