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Mirrors > Home > MPE Home > Th. List > Mathboxes > atex | Structured version Visualization version GIF version |
Description: At least one atom exists. (Contributed by NM, 15-Jul-2012.) |
Ref | Expression |
---|---|
atex.1 | ⊢ 𝐴 = (Atoms‘𝐾) |
Ref | Expression |
---|---|
atex | ⊢ (𝐾 ∈ HL → 𝐴 ≠ ∅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | atex.1 | . . . 4 ⊢ 𝐴 = (Atoms‘𝐾) | |
2 | 1 | hl2at 36545 | . . 3 ⊢ (𝐾 ∈ HL → ∃𝑝 ∈ 𝐴 ∃𝑞 ∈ 𝐴 𝑝 ≠ 𝑞) |
3 | df-rex 3147 | . . . 4 ⊢ (∃𝑝 ∈ 𝐴 ∃𝑞 ∈ 𝐴 𝑝 ≠ 𝑞 ↔ ∃𝑝(𝑝 ∈ 𝐴 ∧ ∃𝑞 ∈ 𝐴 𝑝 ≠ 𝑞)) | |
4 | exsimpl 1868 | . . . 4 ⊢ (∃𝑝(𝑝 ∈ 𝐴 ∧ ∃𝑞 ∈ 𝐴 𝑝 ≠ 𝑞) → ∃𝑝 𝑝 ∈ 𝐴) | |
5 | 3, 4 | sylbi 219 | . . 3 ⊢ (∃𝑝 ∈ 𝐴 ∃𝑞 ∈ 𝐴 𝑝 ≠ 𝑞 → ∃𝑝 𝑝 ∈ 𝐴) |
6 | 2, 5 | syl 17 | . 2 ⊢ (𝐾 ∈ HL → ∃𝑝 𝑝 ∈ 𝐴) |
7 | n0 4313 | . 2 ⊢ (𝐴 ≠ ∅ ↔ ∃𝑝 𝑝 ∈ 𝐴) | |
8 | 6, 7 | sylibr 236 | 1 ⊢ (𝐾 ∈ HL → 𝐴 ≠ ∅) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1536 ∃wex 1779 ∈ wcel 2113 ≠ wne 3019 ∃wrex 3142 ∅c0 4294 ‘cfv 6358 Atomscatm 36403 HLchlt 36490 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2796 ax-rep 5193 ax-sep 5206 ax-nul 5213 ax-pow 5269 ax-pr 5333 ax-un 7464 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-mo 2621 df-eu 2653 df-clab 2803 df-cleq 2817 df-clel 2896 df-nfc 2966 df-ne 3020 df-ral 3146 df-rex 3147 df-reu 3148 df-rab 3150 df-v 3499 df-sbc 3776 df-csb 3887 df-dif 3942 df-un 3944 df-in 3946 df-ss 3955 df-nul 4295 df-if 4471 df-pw 4544 df-sn 4571 df-pr 4573 df-op 4577 df-uni 4842 df-iun 4924 df-br 5070 df-opab 5132 df-mpt 5150 df-id 5463 df-xp 5564 df-rel 5565 df-cnv 5566 df-co 5567 df-dm 5568 df-rn 5569 df-res 5570 df-ima 5571 df-iota 6317 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7117 df-ov 7162 df-oprab 7163 df-proset 17541 df-poset 17559 df-plt 17571 df-lub 17587 df-glb 17588 df-join 17589 df-meet 17590 df-p0 17652 df-p1 17653 df-lat 17659 df-clat 17721 df-oposet 36316 df-ol 36318 df-oml 36319 df-covers 36406 df-ats 36407 df-atl 36438 df-cvlat 36462 df-hlat 36491 |
This theorem is referenced by: llnn0 36656 lplnn0N 36687 lvoln0N 36731 |
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