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| Mirrors > Home > MPE Home > Th. List > 00lss | Structured version Visualization version GIF version | ||
| Description: The empty structure has no subspaces (for use with fvco4i 6987). (Contributed by Stefan O'Rear, 31-Mar-2015.) |
| Ref | Expression |
|---|---|
| 00lss | ⊢ ∅ = (LSubSp‘∅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | noel 4283 | . . 3 ⊢ ¬ 𝑎 ∈ ∅ | |
| 2 | base0 17397 | . . . . . 6 ⊢ ∅ = (Base‘∅) | |
| 3 | eqid 2760 | . . . . . 6 ⊢ (LSubSp‘∅) = (LSubSp‘∅) | |
| 4 | 2, 3 | lssss 21216 | . . . . 5 ⊢ (𝑎 ∈ (LSubSp‘∅) → 𝑎 ⊆ ∅) |
| 5 | ss0 4351 | . . . . 5 ⊢ (𝑎 ⊆ ∅ → 𝑎 = ∅) | |
| 6 | 4, 5 | syl 18 | . . . 4 ⊢ (𝑎 ∈ (LSubSp‘∅) → 𝑎 = ∅) |
| 7 | 3 | lssn0 21220 | . . . . 5 ⊢ (𝑎 ∈ (LSubSp‘∅) → 𝑎 ≠ ∅) |
| 8 | 7 | neneqd 2960 | . . . 4 ⊢ (𝑎 ∈ (LSubSp‘∅) → ¬ 𝑎 = ∅) |
| 9 | 6, 8 | pm2.65i 196 | . . 3 ⊢ ¬ 𝑎 ∈ (LSubSp‘∅) |
| 10 | 1, 9 | 2false 378 | . 2 ⊢ (𝑎 ∈ ∅ ↔ 𝑎 ∈ (LSubSp‘∅)) |
| 11 | 10 | eqriv 2757 | 1 ⊢ ∅ = (LSubSp‘∅) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2144 ⊆ wss 3895 ∅c0 4278 ‘cfv 6538 LSubSpclss 21211 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11259 ax-1cn 11261 ax-addcl 11263 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-pred 6304 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-om 7878 df-2nd 8002 df-frecs 8302 df-wrecs 8333 df-recs 8382 df-rdg 8421 df-nn 12339 df-slot 17365 df-ndx 17377 df-base 17393 df-lss 21212 |
| This theorem is used by: 00lsp 21261 lidlval 21493 |
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