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| Mirrors > Home > MPE Home > Th. List > rescbas | Structured version Visualization version GIF version | ||
| Description: Base set of the category restriction. (Contributed by Mario Carneiro, 4-Jan-2017.) (Proof shortened by AV, 18-Oct-2024.) |
| Ref | Expression |
|---|---|
| rescbas.d | ⊢ 𝐷 = (𝐶 ↾cat 𝐻) |
| rescbas.b | ⊢ 𝐵 = (Base‘𝐶) |
| rescbas.c | ⊢ (𝜑 → 𝐶 ∈ 𝑉) |
| rescbas.h | ⊢ (𝜑 → 𝐻 Fn (𝑆 × 𝑆)) |
| rescbas.s | ⊢ (𝜑 → 𝑆 ⊆ 𝐵) |
| Ref | Expression |
|---|---|
| rescbas | ⊢ (𝜑 → 𝑆 = (Base‘𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | baseid 17182 | . . 3 ⊢ Base = Slot (Base‘ndx) | |
| 2 | slotsbhcdif 17378 | . . . 4 ⊢ ((Base‘ndx) ≠ (Hom ‘ndx) ∧ (Base‘ndx) ≠ (comp‘ndx) ∧ (Hom ‘ndx) ≠ (comp‘ndx)) | |
| 3 | 2 | simp1i 1139 | . . 3 ⊢ (Base‘ndx) ≠ (Hom ‘ndx) |
| 4 | 1, 3 | setsnid 17178 | . 2 ⊢ (Base‘(𝐶 ↾s 𝑆)) = (Base‘((𝐶 ↾s 𝑆) sSet 〈(Hom ‘ndx), 𝐻〉)) |
| 5 | rescbas.s | . . 3 ⊢ (𝜑 → 𝑆 ⊆ 𝐵) | |
| 6 | eqid 2729 | . . . 4 ⊢ (𝐶 ↾s 𝑆) = (𝐶 ↾s 𝑆) | |
| 7 | rescbas.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
| 8 | 6, 7 | ressbas2 17208 | . . 3 ⊢ (𝑆 ⊆ 𝐵 → 𝑆 = (Base‘(𝐶 ↾s 𝑆))) |
| 9 | 5, 8 | syl 17 | . 2 ⊢ (𝜑 → 𝑆 = (Base‘(𝐶 ↾s 𝑆))) |
| 10 | rescbas.d | . . . 4 ⊢ 𝐷 = (𝐶 ↾cat 𝐻) | |
| 11 | rescbas.c | . . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑉) | |
| 12 | 7 | fvexi 6872 | . . . . . 6 ⊢ 𝐵 ∈ V |
| 13 | 12 | ssex 5276 | . . . . 5 ⊢ (𝑆 ⊆ 𝐵 → 𝑆 ∈ V) |
| 14 | 5, 13 | syl 17 | . . . 4 ⊢ (𝜑 → 𝑆 ∈ V) |
| 15 | rescbas.h | . . . 4 ⊢ (𝜑 → 𝐻 Fn (𝑆 × 𝑆)) | |
| 16 | 10, 11, 14, 15 | rescval2 17790 | . . 3 ⊢ (𝜑 → 𝐷 = ((𝐶 ↾s 𝑆) sSet 〈(Hom ‘ndx), 𝐻〉)) |
| 17 | 16 | fveq2d 6862 | . 2 ⊢ (𝜑 → (Base‘𝐷) = (Base‘((𝐶 ↾s 𝑆) sSet 〈(Hom ‘ndx), 𝐻〉))) |
| 18 | 4, 9, 17 | 3eqtr4a 2790 | 1 ⊢ (𝜑 → 𝑆 = (Base‘𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 Vcvv 3447 ⊆ wss 3914 〈cop 4595 × cxp 5636 Fn wfn 6506 ‘cfv 6511 (class class class)co 7387 sSet csts 17133 ndxcnx 17163 Basecbs 17179 ↾s cress 17200 Hom chom 17231 compcco 17232 ↾cat cresc 17770 |
| 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 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-nn 12187 df-2 12249 df-3 12250 df-4 12251 df-5 12252 df-6 12253 df-7 12254 df-8 12255 df-9 12256 df-n0 12443 df-z 12530 df-dec 12650 df-sets 17134 df-slot 17152 df-ndx 17164 df-base 17180 df-ress 17201 df-hom 17244 df-cco 17245 df-resc 17773 |
| This theorem is referenced by: reschomf 17793 subccatid 17808 issubc3 17811 fullresc 17813 funcres 17858 funcres2b 17859 funcres2 17860 rngcbas 20530 ringcbas 20559 ssccatid 49061 resccatlem 49062 subthinc 49432 |
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