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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 17304 | . . 3 ⊢ Base = Slot (Base‘ndx) | |
| 2 | slotsbhcdif 17500 | . . . 4 ⊢ ((Base‘ndx) ≠ (Hom ‘ndx) ∧ (Base‘ndx) ≠ (comp‘ndx) ∧ (Hom ‘ndx) ≠ (comp‘ndx)) | |
| 3 | 2 | simp1i 1157 | . . 3 ⊢ (Base‘ndx) ≠ (Hom ‘ndx) |
| 4 | 1, 3 | setsnid 17300 | . 2 ⊢ (Base‘(𝐶 ↾s 𝑆)) = (Base‘((𝐶 ↾s 𝑆) sSet 〈(Hom ‘ndx), 𝐻〉)) |
| 5 | rescbas.s | . . 3 ⊢ (𝜑 → 𝑆 ⊆ 𝐵) | |
| 6 | eqid 2760 | . . . 4 ⊢ (𝐶 ↾s 𝑆) = (𝐶 ↾s 𝑆) | |
| 7 | rescbas.b | . . . 4 ⊢ 𝐵 = (Base‘𝐶) | |
| 8 | 6, 7 | ressbas2 17330 | . . 3 ⊢ (𝑆 ⊆ 𝐵 → 𝑆 = (Base‘(𝐶 ↾s 𝑆))) |
| 9 | 5, 8 | syl 18 | . 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 6892 | . . . . . 6 ⊢ 𝐵 ∈ V |
| 13 | 12 | ssex 5285 | . . . . 5 ⊢ (𝑆 ⊆ 𝐵 → 𝑆 ∈ V) |
| 14 | 5, 13 | syl 18 | . . . 4 ⊢ (𝜑 → 𝑆 ∈ V) |
| 15 | rescbas.h | . . . 4 ⊢ (𝜑 → 𝐻 Fn (𝑆 × 𝑆)) | |
| 16 | 10, 11, 14, 15 | rescval2 17917 | . . 3 ⊢ (𝜑 → 𝐷 = ((𝐶 ↾s 𝑆) sSet 〈(Hom ‘ndx), 𝐻〉)) |
| 17 | 16 | fveq2d 6882 | . 2 ⊢ (𝜑 → (Base‘𝐷) = (Base‘((𝐶 ↾s 𝑆) sSet 〈(Hom ‘ndx), 𝐻〉))) |
| 18 | 4, 9, 17 | 3eqtr4a 2821 | 1 ⊢ (𝜑 → 𝑆 = (Base‘𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 ≠ wne 2955 Vcvv 3450 ⊆ wss 3899 〈cop 4590 × cxp 5653 Fn wfn 6528 ‘cfv 6533 (class class class)co 7413 sSet csts 17255 ndxcnx 17285 Basecbs 17301 ↾s cress 17322 Hom chom 17353 compcco 17354 ↾cat cresc 17897 |
| 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-rep 5232 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7736 ax-cnex 11180 ax-resscn 11181 ax-1cn 11182 ax-icn 11183 ax-addcl 11184 ax-addrcl 11185 ax-mulcl 11186 ax-mulrcl 11187 ax-mulcom 11188 ax-addass 11189 ax-mulass 11190 ax-distr 11191 ax-i2m1 11192 ax-1ne0 11193 ax-1rid 11194 ax-rnegex 11195 ax-rrecex 11196 ax-cnre 11197 ax-pre-lttri 11198 ax-pre-lttrn 11199 ax-pre-ltadd 11200 ax-pre-mulgt0 11201 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-reu 3366 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-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 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-pred 6299 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-riota 7370 df-ov 7416 df-oprab 7417 df-mpo 7418 df-om 7863 df-2nd 7987 df-frecs 8280 df-wrecs 8311 df-recs 8360 df-rdg 8399 df-er 8696 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11269 df-mnf 11270 df-xr 11271 df-ltxr 11272 df-le 11273 df-sub 11467 df-neg 11468 df-nn 12258 df-2 12327 df-3 12328 df-4 12329 df-5 12330 df-6 12331 df-7 12332 df-8 12333 df-9 12334 df-n0 12529 df-z 12616 df-dec 12737 df-sets 17256 df-slot 17274 df-ndx 17286 df-base 17302 df-ress 17323 df-hom 17366 df-cco 17367 df-resc 17900 |
| This theorem is used by: reschomf 17920 subccatid 17935 issubc3 17938 fullresc 17940 funcres 17985 funcres2b 17986 funcres2 17987 rngcbas 20783 ringcbas 20812 ssccatid 49998 resccatlem 49999 subthinc 50369 |
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