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Mirrors > Home > MPE Home > Th. List > tglowdim1i | Structured version Visualization version GIF version |
Description: Lower dimension axiom for one dimension. (Contributed by Thierry Arnoux, 28-May-2019.) |
Ref | Expression |
---|---|
tglowdim1.p | ⊢ 𝑃 = (Base‘𝐺) |
tglowdim1.d | ⊢ − = (dist‘𝐺) |
tglowdim1.i | ⊢ 𝐼 = (Itv‘𝐺) |
tglowdim1.g | ⊢ (𝜑 → 𝐺 ∈ TarskiG) |
tglowdim1.1 | ⊢ (𝜑 → 2 ≤ (♯‘𝑃)) |
tglowdim1i.1 | ⊢ (𝜑 → 𝑋 ∈ 𝑃) |
Ref | Expression |
---|---|
tglowdim1i | ⊢ (𝜑 → ∃𝑦 ∈ 𝑃 𝑋 ≠ 𝑦) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tglowdim1.p | . . . . 5 ⊢ 𝑃 = (Base‘𝐺) | |
2 | tglowdim1.d | . . . . 5 ⊢ − = (dist‘𝐺) | |
3 | tglowdim1.i | . . . . 5 ⊢ 𝐼 = (Itv‘𝐺) | |
4 | tglowdim1.g | . . . . . 6 ⊢ (𝜑 → 𝐺 ∈ TarskiG) | |
5 | 4 | adantr 481 | . . . . 5 ⊢ ((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) → 𝐺 ∈ TarskiG) |
6 | tglowdim1.1 | . . . . . 6 ⊢ (𝜑 → 2 ≤ (♯‘𝑃)) | |
7 | 6 | adantr 481 | . . . . 5 ⊢ ((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) → 2 ≤ (♯‘𝑃)) |
8 | 1, 2, 3, 5, 7 | tglowdim1 26861 | . . . 4 ⊢ ((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) → ∃𝑎 ∈ 𝑃 ∃𝑏 ∈ 𝑃 𝑎 ≠ 𝑏) |
9 | eqeq2 2750 | . . . . . . . . 9 ⊢ (𝑦 = 𝑎 → (𝑋 = 𝑦 ↔ 𝑋 = 𝑎)) | |
10 | simpllr 773 | . . . . . . . . 9 ⊢ ((((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) ∧ 𝑎 ∈ 𝑃) ∧ 𝑏 ∈ 𝑃) → ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) | |
11 | simplr 766 | . . . . . . . . 9 ⊢ ((((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) ∧ 𝑎 ∈ 𝑃) ∧ 𝑏 ∈ 𝑃) → 𝑎 ∈ 𝑃) | |
12 | 9, 10, 11 | rspcdva 3562 | . . . . . . . 8 ⊢ ((((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) ∧ 𝑎 ∈ 𝑃) ∧ 𝑏 ∈ 𝑃) → 𝑋 = 𝑎) |
13 | eqeq2 2750 | . . . . . . . . . 10 ⊢ (𝑦 = 𝑏 → (𝑋 = 𝑦 ↔ 𝑋 = 𝑏)) | |
14 | 13 | rspccva 3560 | . . . . . . . . 9 ⊢ ((∀𝑦 ∈ 𝑃 𝑋 = 𝑦 ∧ 𝑏 ∈ 𝑃) → 𝑋 = 𝑏) |
15 | 14 | ad4ant24 751 | . . . . . . . 8 ⊢ ((((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) ∧ 𝑎 ∈ 𝑃) ∧ 𝑏 ∈ 𝑃) → 𝑋 = 𝑏) |
16 | 12, 15 | eqtr3d 2780 | . . . . . . 7 ⊢ ((((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) ∧ 𝑎 ∈ 𝑃) ∧ 𝑏 ∈ 𝑃) → 𝑎 = 𝑏) |
17 | nne 2947 | . . . . . . 7 ⊢ (¬ 𝑎 ≠ 𝑏 ↔ 𝑎 = 𝑏) | |
18 | 16, 17 | sylibr 233 | . . . . . 6 ⊢ ((((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) ∧ 𝑎 ∈ 𝑃) ∧ 𝑏 ∈ 𝑃) → ¬ 𝑎 ≠ 𝑏) |
19 | 18 | nrexdv 3198 | . . . . 5 ⊢ (((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) ∧ 𝑎 ∈ 𝑃) → ¬ ∃𝑏 ∈ 𝑃 𝑎 ≠ 𝑏) |
20 | 19 | nrexdv 3198 | . . . 4 ⊢ ((𝜑 ∧ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) → ¬ ∃𝑎 ∈ 𝑃 ∃𝑏 ∈ 𝑃 𝑎 ≠ 𝑏) |
21 | 8, 20 | pm2.65da 814 | . . 3 ⊢ (𝜑 → ¬ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) |
22 | rexnal 3169 | . . 3 ⊢ (∃𝑦 ∈ 𝑃 ¬ 𝑋 = 𝑦 ↔ ¬ ∀𝑦 ∈ 𝑃 𝑋 = 𝑦) | |
23 | 21, 22 | sylibr 233 | . 2 ⊢ (𝜑 → ∃𝑦 ∈ 𝑃 ¬ 𝑋 = 𝑦) |
24 | df-ne 2944 | . . 3 ⊢ (𝑋 ≠ 𝑦 ↔ ¬ 𝑋 = 𝑦) | |
25 | 24 | rexbii 3181 | . 2 ⊢ (∃𝑦 ∈ 𝑃 𝑋 ≠ 𝑦 ↔ ∃𝑦 ∈ 𝑃 ¬ 𝑋 = 𝑦) |
26 | 23, 25 | sylibr 233 | 1 ⊢ (𝜑 → ∃𝑦 ∈ 𝑃 𝑋 ≠ 𝑦) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 396 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 ∀wral 3064 ∃wrex 3065 class class class wbr 5074 ‘cfv 6433 ≤ cle 11010 2c2 12028 ♯chash 14044 Basecbs 16912 distcds 16971 TarskiGcstrkg 26788 Itvcitv 26794 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 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 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-int 4880 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-er 8498 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-card 9697 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-n0 12234 df-xnn0 12306 df-z 12320 df-uz 12583 df-fz 13240 df-hash 14045 |
This theorem is referenced by: colline 27010 |
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