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Mirrors > Home > MPE Home > Th. List > tglowdim1 | Structured version Visualization version GIF version |
Description: Lower dimension axiom for one dimension. In dimension at least 1, there are at least two distinct points. The condition "the space is of dimension 1 or more" is written here as 2 ≤ (♯‘𝑃) to avoid a new definition, but a different convention could be chosen. (Contributed by Thierry Arnoux, 23-Mar-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)) |
Ref | Expression |
---|---|
tglowdim1 | ⊢ (𝜑 → ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 𝑥 ≠ 𝑦) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tglowdim1.p | . . 3 ⊢ 𝑃 = (Base‘𝐺) | |
2 | 1 | fvexi 6781 | . 2 ⊢ 𝑃 ∈ V |
3 | tglowdim1.1 | . 2 ⊢ (𝜑 → 2 ≤ (♯‘𝑃)) | |
4 | hashge2el2dif 14182 | . 2 ⊢ ((𝑃 ∈ V ∧ 2 ≤ (♯‘𝑃)) → ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 𝑥 ≠ 𝑦) | |
5 | 2, 3, 4 | sylancr 587 | 1 ⊢ (𝜑 → ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 𝑥 ≠ 𝑦) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 ∃wrex 3065 Vcvv 3430 class class class wbr 5074 ‘cfv 6427 ≤ cle 10998 2c2 12016 ♯chash 14032 Basecbs 16900 distcds 16959 TarskiGcstrkg 26776 Itvcitv 26782 |
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 5222 ax-nul 5229 ax-pow 5287 ax-pr 5351 ax-un 7579 ax-cnex 10915 ax-resscn 10916 ax-1cn 10917 ax-icn 10918 ax-addcl 10919 ax-addrcl 10920 ax-mulcl 10921 ax-mulrcl 10922 ax-mulcom 10923 ax-addass 10924 ax-mulass 10925 ax-distr 10926 ax-i2m1 10927 ax-1ne0 10928 ax-1rid 10929 ax-rnegex 10930 ax-rrecex 10931 ax-cnre 10932 ax-pre-lttri 10933 ax-pre-lttrn 10934 ax-pre-ltadd 10935 ax-pre-mulgt0 10936 |
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 3071 df-rab 3073 df-v 3432 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4258 df-if 4461 df-pw 4536 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4841 df-int 4881 df-iun 4927 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5485 df-eprel 5491 df-po 5499 df-so 5500 df-fr 5540 df-we 5542 df-xp 5591 df-rel 5592 df-cnv 5593 df-co 5594 df-dm 5595 df-rn 5596 df-res 5597 df-ima 5598 df-pred 6196 df-ord 6263 df-on 6264 df-lim 6265 df-suc 6266 df-iota 6385 df-fun 6429 df-fn 6430 df-f 6431 df-f1 6432 df-fo 6433 df-f1o 6434 df-fv 6435 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-om 7704 df-1st 7821 df-2nd 7822 df-frecs 8085 df-wrecs 8116 df-recs 8190 df-rdg 8229 df-1o 8285 df-er 8486 df-en 8722 df-dom 8723 df-sdom 8724 df-fin 8725 df-card 9685 df-pnf 10999 df-mnf 11000 df-xr 11001 df-ltxr 11002 df-le 11003 df-sub 11195 df-neg 11196 df-nn 11962 df-2 12024 df-n0 12222 df-xnn0 12294 df-z 12308 df-uz 12571 df-fz 13228 df-hash 14033 |
This theorem is referenced by: tglowdim1i 26850 tgbtwndiff 26855 |
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