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| Mirrors > Home > HSE Home > Th. List > ococss | Structured version Visualization version GIF version | ||
| Description: Inclusion in complement of complement. Part of Proposition 1 of [Kalmbach] p. 65. (Contributed by NM, 9-Aug-2000.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| ococss | ⊢ (𝐴 ⊆ ℋ → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 3925 | . . . 4 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ 𝐴 → 𝑦 ∈ ℋ)) | |
| 2 | ocorth 31875 | . . . . . 6 ⊢ (𝐴 ⊆ ℋ → ((𝑦 ∈ 𝐴 ∧ 𝑥 ∈ (⊥‘𝐴)) → (𝑦 ·ih 𝑥) = 0)) | |
| 3 | 2 | expd 421 | . . . . 5 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ 𝐴 → (𝑥 ∈ (⊥‘𝐴) → (𝑦 ·ih 𝑥) = 0))) |
| 4 | 3 | ralrimdv 3161 | . . . 4 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ 𝐴 → ∀𝑥 ∈ (⊥‘𝐴)(𝑦 ·ih 𝑥) = 0)) |
| 5 | 1, 4 | jcad 522 | . . 3 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ 𝐴 → (𝑦 ∈ ℋ ∧ ∀𝑥 ∈ (⊥‘𝐴)(𝑦 ·ih 𝑥) = 0))) |
| 6 | ocss 31869 | . . . 4 ⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) ⊆ ℋ) | |
| 7 | ocel 31865 | . . . 4 ⊢ ((⊥‘𝐴) ⊆ ℋ → (𝑦 ∈ (⊥‘(⊥‘𝐴)) ↔ (𝑦 ∈ ℋ ∧ ∀𝑥 ∈ (⊥‘𝐴)(𝑦 ·ih 𝑥) = 0))) | |
| 8 | 6, 7 | syl 18 | . . 3 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ (⊥‘(⊥‘𝐴)) ↔ (𝑦 ∈ ℋ ∧ ∀𝑥 ∈ (⊥‘𝐴)(𝑦 ·ih 𝑥) = 0))) |
| 9 | 5, 8 | sylibrd 262 | . 2 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ 𝐴 → 𝑦 ∈ (⊥‘(⊥‘𝐴)))) |
| 10 | 9 | ssrdv 3937 | 1 ⊢ (𝐴 ⊆ ℋ → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2145 ∀wral 3077 ⊆ wss 3899 ‘cfv 6531 (class class class)co 7412 0cc0 11181 ℋchba 31503 ·ih csp 31506 ⊥cort 31514 |
| 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 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 ax-hilex 31583 ax-hfvadd 31584 ax-hv0cl 31587 ax-hfvmul 31589 ax-hvmul0 31594 ax-hfi 31663 ax-his1 31666 ax-his2 31667 ax-his3 31668 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6297 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7867 df-2nd 7991 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-rdg 8402 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-div 11955 df-nn 12317 df-2 12386 df-cj 15246 df-re 15247 df-im 15248 df-sh 31791 df-oc 31836 |
| This theorem is used by: shococss 31878 occon3 31881 hsupunss 31927 spanssoc 31933 shunssji 31953 ococin 31992 sshhococi 32130 h1did 32135 spansnpji 32162 pjoccoi 32762 |
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