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Mirrors > Home > MPE Home > Th. List > tgidinside | Structured version Visualization version GIF version |
Description: Law for finding a point inside a segment. Theorem 4.19 of [Schwabhauser] p. 38. (Contributed by Thierry Arnoux, 28-Apr-2019.) |
Ref | Expression |
---|---|
tglngval.p | ⊢ 𝑃 = (Base‘𝐺) |
tglngval.l | ⊢ 𝐿 = (LineG‘𝐺) |
tglngval.i | ⊢ 𝐼 = (Itv‘𝐺) |
tglngval.g | ⊢ (𝜑 → 𝐺 ∈ TarskiG) |
tglngval.x | ⊢ (𝜑 → 𝑋 ∈ 𝑃) |
tglngval.y | ⊢ (𝜑 → 𝑌 ∈ 𝑃) |
tgcolg.z | ⊢ (𝜑 → 𝑍 ∈ 𝑃) |
lnxfr.r | ⊢ ∼ = (cgrG‘𝐺) |
lnxfr.a | ⊢ (𝜑 → 𝐴 ∈ 𝑃) |
lnxfr.b | ⊢ (𝜑 → 𝐵 ∈ 𝑃) |
lnxfr.d | ⊢ − = (dist‘𝐺) |
tgidinside.1 | ⊢ (𝜑 → 𝑍 ∈ (𝑋𝐼𝑌)) |
tgidinside.2 | ⊢ (𝜑 → (𝑋 − 𝑍) = (𝑋 − 𝐴)) |
tgidinside.3 | ⊢ (𝜑 → (𝑌 − 𝑍) = (𝑌 − 𝐴)) |
Ref | Expression |
---|---|
tgidinside | ⊢ (𝜑 → 𝑍 = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tglngval.p | . . . 4 ⊢ 𝑃 = (Base‘𝐺) | |
2 | lnxfr.d | . . . 4 ⊢ − = (dist‘𝐺) | |
3 | tglngval.i | . . . 4 ⊢ 𝐼 = (Itv‘𝐺) | |
4 | tglngval.g | . . . . 5 ⊢ (𝜑 → 𝐺 ∈ TarskiG) | |
5 | 4 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝐺 ∈ TarskiG) |
6 | tglngval.x | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ 𝑃) | |
7 | 6 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑋 ∈ 𝑃) |
8 | tgcolg.z | . . . . 5 ⊢ (𝜑 → 𝑍 ∈ 𝑃) | |
9 | 8 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑍 ∈ 𝑃) |
10 | tgidinside.1 | . . . . . 6 ⊢ (𝜑 → 𝑍 ∈ (𝑋𝐼𝑌)) | |
11 | 10 | adantr 480 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑍 ∈ (𝑋𝐼𝑌)) |
12 | simpr 484 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑋 = 𝑌) | |
13 | 12 | oveq2d 7271 | . . . . 5 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋𝐼𝑋) = (𝑋𝐼𝑌)) |
14 | 11, 13 | eleqtrrd 2842 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑍 ∈ (𝑋𝐼𝑋)) |
15 | 1, 2, 3, 5, 7, 9, 14 | axtgbtwnid 26731 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑋 = 𝑍) |
16 | lnxfr.a | . . . . 5 ⊢ (𝜑 → 𝐴 ∈ 𝑃) | |
17 | 16 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝐴 ∈ 𝑃) |
18 | tgidinside.2 | . . . . 5 ⊢ (𝜑 → (𝑋 − 𝑍) = (𝑋 − 𝐴)) | |
19 | 18 | adantr 480 | . . . 4 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → (𝑋 − 𝑍) = (𝑋 − 𝐴)) |
20 | 1, 2, 3, 5, 7, 9, 7, 17, 19, 15 | tgcgreq 26747 | . . 3 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑋 = 𝐴) |
21 | 15, 20 | eqtr3d 2780 | . 2 ⊢ ((𝜑 ∧ 𝑋 = 𝑌) → 𝑍 = 𝐴) |
22 | tglngval.l | . . 3 ⊢ 𝐿 = (LineG‘𝐺) | |
23 | 4 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝐺 ∈ TarskiG) |
24 | 6 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ∈ 𝑃) |
25 | tglngval.y | . . . 4 ⊢ (𝜑 → 𝑌 ∈ 𝑃) | |
26 | 25 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑌 ∈ 𝑃) |
27 | 8 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑍 ∈ 𝑃) |
28 | lnxfr.r | . . 3 ⊢ ∼ = (cgrG‘𝐺) | |
29 | 16 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝐴 ∈ 𝑃) |
30 | lnxfr.b | . . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝑃) | |
31 | 30 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝐵 ∈ 𝑃) |
32 | simpr 484 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑋 ≠ 𝑌) | |
33 | 1, 22, 3, 4, 6, 8, 25, 10 | btwncolg3 26822 | . . . 4 ⊢ (𝜑 → (𝑌 ∈ (𝑋𝐿𝑍) ∨ 𝑋 = 𝑍)) |
34 | 33 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑌 ∈ (𝑋𝐿𝑍) ∨ 𝑋 = 𝑍)) |
35 | 18 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑋 − 𝑍) = (𝑋 − 𝐴)) |
36 | tgidinside.3 | . . . 4 ⊢ (𝜑 → (𝑌 − 𝑍) = (𝑌 − 𝐴)) | |
37 | 36 | adantr 480 | . . 3 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → (𝑌 − 𝑍) = (𝑌 − 𝐴)) |
38 | 1, 22, 3, 23, 24, 26, 27, 28, 29, 31, 2, 32, 34, 35, 37 | lnid 26835 | . 2 ⊢ ((𝜑 ∧ 𝑋 ≠ 𝑌) → 𝑍 = 𝐴) |
39 | 21, 38 | pm2.61dane 3031 | 1 ⊢ (𝜑 → 𝑍 = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∨ wo 843 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ‘cfv 6418 (class class class)co 7255 Basecbs 16840 distcds 16897 TarskiGcstrkg 26693 Itvcitv 26699 LineGclng 26700 cgrGccgrg 26775 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-int 4877 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-oadd 8271 df-er 8456 df-pm 8576 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-dju 9590 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-xnn0 12236 df-z 12250 df-uz 12512 df-fz 13169 df-fzo 13312 df-hash 13973 df-word 14146 df-concat 14202 df-s1 14229 df-s2 14489 df-s3 14490 df-trkgc 26713 df-trkgb 26714 df-trkgcb 26715 df-trkg 26718 df-cgrg 26776 |
This theorem is referenced by: miduniq 26950 ragflat2 26968 |
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