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Mirrors > Home > MPE Home > Th. List > midid | Structured version Visualization version GIF version |
Description: Midpoint of a null segment. (Contributed by Thierry Arnoux, 7-Dec-2019.) |
Ref | Expression |
---|---|
ismid.p | ⊢ 𝑃 = (Base‘𝐺) |
ismid.d | ⊢ − = (dist‘𝐺) |
ismid.i | ⊢ 𝐼 = (Itv‘𝐺) |
ismid.g | ⊢ (𝜑 → 𝐺 ∈ TarskiG) |
ismid.1 | ⊢ (𝜑 → 𝐺DimTarskiG≥2) |
midcl.1 | ⊢ (𝜑 → 𝐴 ∈ 𝑃) |
midcl.2 | ⊢ (𝜑 → 𝐵 ∈ 𝑃) |
Ref | Expression |
---|---|
midid | ⊢ (𝜑 → (𝐴(midG‘𝐺)𝐴) = 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ismid.p | . . 3 ⊢ 𝑃 = (Base‘𝐺) | |
2 | ismid.d | . . 3 ⊢ − = (dist‘𝐺) | |
3 | ismid.i | . . 3 ⊢ 𝐼 = (Itv‘𝐺) | |
4 | ismid.g | . . 3 ⊢ (𝜑 → 𝐺 ∈ TarskiG) | |
5 | midcl.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑃) | |
6 | ismid.1 | . . . 4 ⊢ (𝜑 → 𝐺DimTarskiG≥2) | |
7 | 1, 2, 3, 4, 6, 5, 5 | midcl 27957 | . . 3 ⊢ (𝜑 → (𝐴(midG‘𝐺)𝐴) ∈ 𝑃) |
8 | 1, 2, 3, 4, 6, 5, 5 | midbtwn 27959 | . . 3 ⊢ (𝜑 → (𝐴(midG‘𝐺)𝐴) ∈ (𝐴𝐼𝐴)) |
9 | 1, 2, 3, 4, 5, 7, 8 | axtgbtwnid 27646 | . 2 ⊢ (𝜑 → 𝐴 = (𝐴(midG‘𝐺)𝐴)) |
10 | 9 | eqcomd 2738 | 1 ⊢ (𝜑 → (𝐴(midG‘𝐺)𝐴) = 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1541 ∈ wcel 2106 class class class wbr 5142 ‘cfv 6533 (class class class)co 7394 2c2 12251 Basecbs 17128 distcds 17190 TarskiGcstrkg 27607 DimTarskiG≥cstrkgld 27611 Itvcitv 27613 midGcmid 27952 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5357 ax-pr 5421 ax-un 7709 ax-cnex 11150 ax-resscn 11151 ax-1cn 11152 ax-icn 11153 ax-addcl 11154 ax-addrcl 11155 ax-mulcl 11156 ax-mulrcl 11157 ax-mulcom 11158 ax-addass 11159 ax-mulass 11160 ax-distr 11161 ax-i2m1 11162 ax-1ne0 11163 ax-1rid 11164 ax-rnegex 11165 ax-rrecex 11166 ax-cnre 11167 ax-pre-lttri 11168 ax-pre-lttrn 11169 ax-pre-ltadd 11170 ax-pre-mulgt0 11171 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3775 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3964 df-nul 4320 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-tp 4628 df-op 4630 df-uni 4903 df-int 4945 df-iun 4993 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5568 df-eprel 5574 df-po 5582 df-so 5583 df-fr 5625 df-we 5627 df-xp 5676 df-rel 5677 df-cnv 5678 df-co 5679 df-dm 5680 df-rn 5681 df-res 5682 df-ima 5683 df-pred 6290 df-ord 6357 df-on 6358 df-lim 6359 df-suc 6360 df-iota 6485 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7350 df-ov 7397 df-oprab 7398 df-mpo 7399 df-om 7840 df-1st 7959 df-2nd 7960 df-frecs 8250 df-wrecs 8281 df-recs 8355 df-rdg 8394 df-1o 8450 df-oadd 8454 df-er 8688 df-map 8807 df-pm 8808 df-en 8925 df-dom 8926 df-sdom 8927 df-fin 8928 df-dju 9880 df-card 9918 df-pnf 11234 df-mnf 11235 df-xr 11236 df-ltxr 11237 df-le 11238 df-sub 11430 df-neg 11431 df-nn 12197 df-2 12259 df-3 12260 df-n0 12457 df-xnn0 12529 df-z 12543 df-uz 12807 df-fz 13469 df-fzo 13612 df-hash 14275 df-word 14449 df-concat 14505 df-s1 14530 df-s2 14783 df-s3 14784 df-trkgc 27628 df-trkgb 27629 df-trkgcb 27630 df-trkgld 27632 df-trkg 27633 df-cgrg 27691 df-leg 27763 df-mir 27833 df-rag 27874 df-perpg 27876 df-mid 27954 |
This theorem is referenced by: lmieu 27964 lmiinv 27972 lmiisolem 27976 |
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