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| Mirrors > Home > MPE Home > Th. List > lnoppnhpg | Structured version Visualization version GIF version | ||
| Description: If two points lie on the opposite side of a line 𝐷, they are not on the same half-plane. Theorem 9.9 of [Schwabhauser] p. 72. (Contributed by Thierry Arnoux, 4-Mar-2020.) |
| Ref | Expression |
|---|---|
| ishpg.p | ⊢ 𝑃 = (Base‘𝐺) |
| ishpg.i | ⊢ 𝐼 = (Itv‘𝐺) |
| ishpg.l | ⊢ 𝐿 = (LineG‘𝐺) |
| ishpg.o | ⊢ 𝑂 = {〈𝑎, 𝑏〉 ∣ ((𝑎 ∈ (𝑃 ∖ 𝐷) ∧ 𝑏 ∈ (𝑃 ∖ 𝐷)) ∧ ∃𝑡 ∈ 𝐷 𝑡 ∈ (𝑎𝐼𝑏))} |
| ishpg.g | ⊢ (𝜑 → 𝐺 ∈ TarskiG) |
| ishpg.d | ⊢ (𝜑 → 𝐷 ∈ ran 𝐿) |
| hpgbr.a | ⊢ (𝜑 → 𝐴 ∈ 𝑃) |
| hpgbr.b | ⊢ (𝜑 → 𝐵 ∈ 𝑃) |
| lnoppnhpg.1 | ⊢ (𝜑 → 𝐴𝑂𝐵) |
| Ref | Expression |
|---|---|
| lnoppnhpg | ⊢ (𝜑 → ¬ 𝐴((hpG‘𝐺)‘𝐷)𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ishpg.p | . . 3 ⊢ 𝑃 = (Base‘𝐺) | |
| 2 | eqid 2761 | . . 3 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
| 3 | ishpg.i | . . 3 ⊢ 𝐼 = (Itv‘𝐺) | |
| 4 | ishpg.o | . . 3 ⊢ 𝑂 = {〈𝑎, 𝑏〉 ∣ ((𝑎 ∈ (𝑃 ∖ 𝐷) ∧ 𝑏 ∈ (𝑃 ∖ 𝐷)) ∧ ∃𝑡 ∈ 𝐷 𝑡 ∈ (𝑎𝐼𝑏))} | |
| 5 | ishpg.l | . . 3 ⊢ 𝐿 = (LineG‘𝐺) | |
| 6 | ishpg.d | . . 3 ⊢ (𝜑 → 𝐷 ∈ ran 𝐿) | |
| 7 | ishpg.g | . . 3 ⊢ (𝜑 → 𝐺 ∈ TarskiG) | |
| 8 | hpgbr.b | . . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑃) | |
| 9 | 1, 2, 3, 4, 5, 6, 7, 8 | oppnid 29222 | . 2 ⊢ (𝜑 → ¬ 𝐵𝑂𝐵) |
| 10 | hpgbr.a | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑃) | |
| 11 | lnoppnhpg.1 | . . 3 ⊢ (𝜑 → 𝐴𝑂𝐵) | |
| 12 | 1, 3, 5, 4, 7, 6, 10, 8, 8, 11 | lnopp2hpgb 29241 | . 2 ⊢ (𝜑 → (𝐵𝑂𝐵 ↔ 𝐴((hpG‘𝐺)‘𝐷)𝐵)) |
| 13 | 9, 12 | mtbid 327 | 1 ⊢ (𝜑 → ¬ 𝐴((hpG‘𝐺)‘𝐷)𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∃wrex 3087 ∖ cdif 3896 class class class wbr 5103 {copab 5167 ran crn 5652 ‘cfv 6538 (class class class)co 7420 Basecbs 17387 distcds 17437 TarskiGcstrkg 28889 Itvcitv 28895 LineGclng 28896 hpGchpg 29235 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 ax-cnex 11256 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-pre-mulgt0 11277 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-riota 7377 df-ov 7423 df-oprab 7424 df-mpo 7425 df-om 7878 df-1st 8001 df-2nd 8002 df-frecs 8299 df-wrecs 8330 df-recs 8379 df-rdg 8418 df-1o 8476 df-oadd 8480 df-er 8717 df-map 8849 df-pm 8850 df-en 8974 df-dom 8975 df-sdom 8976 df-fin 8977 df-dju 9982 df-card 10020 df-pnf 11345 df-mnf 11346 df-xr 11347 df-ltxr 11348 df-le 11349 df-sub 11543 df-neg 11544 df-nn 12336 df-2 12405 df-3 12406 df-n0 12607 df-xnn0 12680 df-z 12694 df-uz 12966 df-fz 13640 df-fzo 13789 df-hash 14475 df-word 14659 df-concat 14716 df-s1 14743 df-s2 14999 df-s3 15000 df-trkgc 28910 df-trkgb 28911 df-trkgcb 28912 df-trkgld 28914 df-trkg 28915 df-cgrg 28974 df-leg 29046 df-hlg 29064 df-mir 29125 df-rag 29169 df-perpg 29171 df-hpg 29236 |
| This theorem is used by: plngrotlem2 29266 prlngmolem1 29430 |
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