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| Mirrors > Home > HSE Home > Th. List > shincli | Structured version Visualization version GIF version | ||
| Description: Closure of intersection of two subspaces. (Contributed by NM, 19-Oct-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| shincl.1 | ⊢ 𝐴 ∈ Sℋ |
| shincl.2 | ⊢ 𝐵 ∈ Sℋ |
| Ref | Expression |
|---|---|
| shincli | ⊢ (𝐴 ∩ 𝐵) ∈ Sℋ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shincl.1 | . . . 4 ⊢ 𝐴 ∈ Sℋ | |
| 2 | 1 | elexi 3472 | . . 3 ⊢ 𝐴 ∈ V |
| 3 | shincl.2 | . . . 4 ⊢ 𝐵 ∈ Sℋ | |
| 4 | 3 | elexi 3472 | . . 3 ⊢ 𝐵 ∈ V |
| 5 | 2, 4 | intpr 4942 | . 2 ⊢ ∩ {𝐴, 𝐵} = (𝐴 ∩ 𝐵) |
| 6 | 1, 3 | pm3.2i 476 | . . . . 5 ⊢ (𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) |
| 7 | 2, 4 | prss 4781 | . . . . 5 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) ↔ {𝐴, 𝐵} ⊆ Sℋ ) |
| 8 | 6, 7 | mpbi 233 | . . . 4 ⊢ {𝐴, 𝐵} ⊆ Sℋ |
| 9 | 2 | prnz 4738 | . . . 4 ⊢ {𝐴, 𝐵} ≠ ∅ |
| 10 | 8, 9 | pm3.2i 476 | . . 3 ⊢ ({𝐴, 𝐵} ⊆ Sℋ ∧ {𝐴, 𝐵} ≠ ∅) |
| 11 | 10 | shintcli 31850 | . 2 ⊢ ∩ {𝐴, 𝐵} ∈ Sℋ |
| 12 | 5, 11 | eqeltrri 2857 | 1 ⊢ (𝐴 ∩ 𝐵) ∈ Sℋ |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 ∈ wcel 2145 ≠ wne 2955 ∩ cin 3898 ⊆ wss 3899 ∅c0 4279 {cpr 4586 ∩ cint 4907 Sℋ csh 31449 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5249 ax-nul 5260 ax-pr 5391 ax-hilex 31520 ax-hfvadd 31521 ax-hv0cl 31524 ax-hfvmul 31526 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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-rab 3413 df-v 3452 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-int 4908 df-iun 4953 df-br 5104 df-opab 5168 df-id 5543 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-iota 6484 df-fun 6530 df-fn 6531 df-f 6532 df-fv 6536 df-ov 7412 df-sh 31728 |
| This theorem is used by: shincl 31902 shmodsi 31910 shmodi 31911 5oalem1 32175 5oalem3 32177 5oalem5 32179 5oalem6 32180 5oai 32182 3oalem2 32184 3oalem6 32188 cdj3lem1 32955 |
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