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Mirrors > Home > MPE Home > Th. List > rescabs2 | Structured version Visualization version GIF version |
Description: Restriction absorption law. (Contributed by Mario Carneiro, 6-Jan-2017.) |
Ref | Expression |
---|---|
rescabs2.c | ⊢ (𝜑 → 𝐶 ∈ 𝑉) |
rescabs2.j | ⊢ (𝜑 → 𝐽 Fn (𝑇 × 𝑇)) |
rescabs2.s | ⊢ (𝜑 → 𝑆 ∈ 𝑊) |
rescabs2.t | ⊢ (𝜑 → 𝑇 ⊆ 𝑆) |
Ref | Expression |
---|---|
rescabs2 | ⊢ (𝜑 → ((𝐶 ↾s 𝑆) ↾cat 𝐽) = (𝐶 ↾cat 𝐽)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rescabs2.s | . . . 4 ⊢ (𝜑 → 𝑆 ∈ 𝑊) | |
2 | rescabs2.t | . . . 4 ⊢ (𝜑 → 𝑇 ⊆ 𝑆) | |
3 | ressabs 16959 | . . . 4 ⊢ ((𝑆 ∈ 𝑊 ∧ 𝑇 ⊆ 𝑆) → ((𝐶 ↾s 𝑆) ↾s 𝑇) = (𝐶 ↾s 𝑇)) | |
4 | 1, 2, 3 | syl2anc 584 | . . 3 ⊢ (𝜑 → ((𝐶 ↾s 𝑆) ↾s 𝑇) = (𝐶 ↾s 𝑇)) |
5 | 4 | oveq1d 7290 | . 2 ⊢ (𝜑 → (((𝐶 ↾s 𝑆) ↾s 𝑇) sSet 〈(Hom ‘ndx), 𝐽〉) = ((𝐶 ↾s 𝑇) sSet 〈(Hom ‘ndx), 𝐽〉)) |
6 | eqid 2738 | . . 3 ⊢ ((𝐶 ↾s 𝑆) ↾cat 𝐽) = ((𝐶 ↾s 𝑆) ↾cat 𝐽) | |
7 | ovexd 7310 | . . 3 ⊢ (𝜑 → (𝐶 ↾s 𝑆) ∈ V) | |
8 | 1, 2 | ssexd 5248 | . . 3 ⊢ (𝜑 → 𝑇 ∈ V) |
9 | rescabs2.j | . . 3 ⊢ (𝜑 → 𝐽 Fn (𝑇 × 𝑇)) | |
10 | 6, 7, 8, 9 | rescval2 17540 | . 2 ⊢ (𝜑 → ((𝐶 ↾s 𝑆) ↾cat 𝐽) = (((𝐶 ↾s 𝑆) ↾s 𝑇) sSet 〈(Hom ‘ndx), 𝐽〉)) |
11 | eqid 2738 | . . 3 ⊢ (𝐶 ↾cat 𝐽) = (𝐶 ↾cat 𝐽) | |
12 | rescabs2.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ 𝑉) | |
13 | 11, 12, 8, 9 | rescval2 17540 | . 2 ⊢ (𝜑 → (𝐶 ↾cat 𝐽) = ((𝐶 ↾s 𝑇) sSet 〈(Hom ‘ndx), 𝐽〉)) |
14 | 5, 10, 13 | 3eqtr4d 2788 | 1 ⊢ (𝜑 → ((𝐶 ↾s 𝑆) ↾cat 𝐽) = (𝐶 ↾cat 𝐽)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2106 Vcvv 3432 ⊆ wss 3887 〈cop 4567 × cxp 5587 Fn wfn 6428 ‘cfv 6433 (class class class)co 7275 sSet csts 16864 ndxcnx 16894 ↾s cress 16941 Hom chom 16973 ↾cat cresc 17520 |
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-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-1cn 10929 ax-addcl 10931 |
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-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-nn 11974 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-resc 17523 |
This theorem is referenced by: (None) |
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