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| Mirrors > Home > MPE Home > Th. List > dfrngc2 | Structured version Visualization version GIF version | ||
| Description: Alternate definition of the category of non-unital rings (in a universe). (Contributed by AV, 16-Mar-2020.) |
| Ref | Expression |
|---|---|
| dfrngc2.c | ⊢ 𝐶 = (RngCat‘𝑈) |
| dfrngc2.u | ⊢ (𝜑 → 𝑈 ∈ 𝑉) |
| dfrngc2.b | ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng)) |
| dfrngc2.h | ⊢ (𝜑 → 𝐻 = ( RngHom ↾ (𝐵 × 𝐵))) |
| dfrngc2.o | ⊢ (𝜑 → · = (comp‘(ExtStrCat‘𝑈))) |
| Ref | Expression |
|---|---|
| dfrngc2 | ⊢ (𝜑 → 𝐶 = {〈(Base‘ndx), 𝐵〉, 〈(Hom ‘ndx), 𝐻〉, 〈(comp‘ndx), · 〉}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfrngc2.c | . . 3 ⊢ 𝐶 = (RngCat‘𝑈) | |
| 2 | dfrngc2.u | . . 3 ⊢ (𝜑 → 𝑈 ∈ 𝑉) | |
| 3 | dfrngc2.b | . . 3 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng)) | |
| 4 | dfrngc2.h | . . 3 ⊢ (𝜑 → 𝐻 = ( RngHom ↾ (𝐵 × 𝐵))) | |
| 5 | 1, 2, 3, 4 | rngcval 20728 | . 2 ⊢ (𝜑 → 𝐶 = ((ExtStrCat‘𝑈) ↾cat 𝐻)) |
| 6 | eqid 2762 | . . 3 ⊢ ((ExtStrCat‘𝑈) ↾cat 𝐻) = ((ExtStrCat‘𝑈) ↾cat 𝐻) | |
| 7 | fvexd 6896 | . . 3 ⊢ (𝜑 → (ExtStrCat‘𝑈) ∈ V) | |
| 8 | inex1g 5287 | . . . . 5 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Rng) ∈ V) | |
| 9 | 2, 8 | syl 18 | . . . 4 ⊢ (𝜑 → (𝑈 ∩ Rng) ∈ V) |
| 10 | 3, 9 | eqeltrd 2862 | . . 3 ⊢ (𝜑 → 𝐵 ∈ V) |
| 11 | 3, 4 | rnghmresfn 20729 | . . 3 ⊢ (𝜑 → 𝐻 Fn (𝐵 × 𝐵)) |
| 12 | 6, 7, 10, 11 | rescval2 17891 | . 2 ⊢ (𝜑 → ((ExtStrCat‘𝑈) ↾cat 𝐻) = (((ExtStrCat‘𝑈) ↾s 𝐵) sSet 〈(Hom ‘ndx), 𝐻〉)) |
| 13 | eqid 2762 | . . . 4 ⊢ (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈) | |
| 14 | eqidd 2763 | . . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝑈, 𝑦 ∈ 𝑈 ↦ ((Base‘𝑦) ↑m (Base‘𝑥))) = (𝑥 ∈ 𝑈, 𝑦 ∈ 𝑈 ↦ ((Base‘𝑦) ↑m (Base‘𝑥)))) | |
| 15 | dfrngc2.o | . . . . 5 ⊢ (𝜑 → · = (comp‘(ExtStrCat‘𝑈))) | |
| 16 | eqid 2762 | . . . . . 6 ⊢ (comp‘(ExtStrCat‘𝑈)) = (comp‘(ExtStrCat‘𝑈)) | |
| 17 | 13, 2, 16 | estrccofval 18191 | . . . . 5 ⊢ (𝜑 → (comp‘(ExtStrCat‘𝑈)) = (𝑣 ∈ (𝑈 × 𝑈), 𝑧 ∈ 𝑈 ↦ (𝑔 ∈ ((Base‘𝑧) ↑m (Base‘(2nd ‘𝑣))), 𝑓 ∈ ((Base‘(2nd ‘𝑣)) ↑m (Base‘(1st ‘𝑣))) ↦ (𝑔 ∘ 𝑓)))) |
| 18 | 15, 17 | eqtrd 2797 | . . . 4 ⊢ (𝜑 → · = (𝑣 ∈ (𝑈 × 𝑈), 𝑧 ∈ 𝑈 ↦ (𝑔 ∈ ((Base‘𝑧) ↑m (Base‘(2nd ‘𝑣))), 𝑓 ∈ ((Base‘(2nd ‘𝑣)) ↑m (Base‘(1st ‘𝑣))) ↦ (𝑔 ∘ 𝑓)))) |
| 19 | 13, 2, 14, 18 | estrcval 18186 | . . 3 ⊢ (𝜑 → (ExtStrCat‘𝑈) = {〈(Base‘ndx), 𝑈〉, 〈(Hom ‘ndx), (𝑥 ∈ 𝑈, 𝑦 ∈ 𝑈 ↦ ((Base‘𝑦) ↑m (Base‘𝑥)))〉, 〈(comp‘ndx), · 〉}) |
| 20 | mpoexga 8072 | . . . 4 ⊢ ((𝑈 ∈ 𝑉 ∧ 𝑈 ∈ 𝑉) → (𝑥 ∈ 𝑈, 𝑦 ∈ 𝑈 ↦ ((Base‘𝑦) ↑m (Base‘𝑥))) ∈ V) | |
| 21 | 2, 2, 20 | syl2anc 595 | . . 3 ⊢ (𝜑 → (𝑥 ∈ 𝑈, 𝑦 ∈ 𝑈 ↦ ((Base‘𝑦) ↑m (Base‘𝑥))) ∈ V) |
| 22 | fvexd 6896 | . . . 4 ⊢ (𝜑 → (comp‘(ExtStrCat‘𝑈)) ∈ V) | |
| 23 | 15, 22 | eqeltrd 2862 | . . 3 ⊢ (𝜑 → · ∈ V) |
| 24 | rnghmfn 20528 | . . . . . 6 ⊢ RngHom Fn (Rng × Rng) | |
| 25 | fnfun 6635 | . . . . . 6 ⊢ ( RngHom Fn (Rng × Rng) → Fun RngHom ) | |
| 26 | 24, 25 | mp1i 14 | . . . . 5 ⊢ (𝜑 → Fun RngHom ) |
| 27 | sqxpexg 7752 | . . . . . 6 ⊢ (𝐵 ∈ V → (𝐵 × 𝐵) ∈ V) | |
| 28 | 10, 27 | syl 18 | . . . . 5 ⊢ (𝜑 → (𝐵 × 𝐵) ∈ V) |
| 29 | resfunexg 7213 | . . . . 5 ⊢ ((Fun RngHom ∧ (𝐵 × 𝐵) ∈ V) → ( RngHom ↾ (𝐵 × 𝐵)) ∈ V) | |
| 30 | 26, 28, 29 | syl2anc 595 | . . . 4 ⊢ (𝜑 → ( RngHom ↾ (𝐵 × 𝐵)) ∈ V) |
| 31 | 4, 30 | eqeltrd 2862 | . . 3 ⊢ (𝜑 → 𝐻 ∈ V) |
| 32 | inss1 4188 | . . . 4 ⊢ (𝑈 ∩ Rng) ⊆ 𝑈 | |
| 33 | 3, 32 | eqsstrdi 3980 | . . 3 ⊢ (𝜑 → 𝐵 ⊆ 𝑈) |
| 34 | 19, 2, 21, 23, 31, 33 | estrres 18201 | . 2 ⊢ (𝜑 → (((ExtStrCat‘𝑈) ↾s 𝐵) sSet 〈(Hom ‘ndx), 𝐻〉) = {〈(Base‘ndx), 𝐵〉, 〈(Hom ‘ndx), 𝐻〉, 〈(comp‘ndx), · 〉}) |
| 35 | 5, 12, 34 | 3eqtrd 2801 | 1 ⊢ (𝜑 → 𝐶 = {〈(Base‘ndx), 𝐵〉, 〈(Hom ‘ndx), 𝐻〉, 〈(comp‘ndx), · 〉}) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∈ wcel 2142 Vcvv 3454 ∩ cin 3903 {ctp 4592 〈cop 4594 × cxp 5658 ↾ cres 5662 ∘ ccom 5664 Fun wfun 6530 Fn wfn 6531 ‘cfv 6536 (class class class)co 7412 ∈ cmpo 7414 1st c1st 7982 2nd c2nd 7983 ↑m cmap 8822 sSet csts 17229 ndxcnx 17259 Basecbs 17275 ↾s cress 17296 Hom chom 17327 compcco 17328 ↾cat cresc 17871 ExtStrCatcestrc 18184 Rngcrng 20236 RngHom crnghm 20523 RngCatcrngc 20726 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5237 ax-sep 5256 ax-nul 5268 ax-pow 5335 ax-pr 5403 ax-un 7734 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1103 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-nel 3064 df-ral 3079 df-rex 3089 df-reu 3369 df-rab 3416 df-v 3456 df-sbc 3744 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4487 df-pw 4563 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4595 df-uni 4872 df-iun 4957 df-br 5109 df-opab 5173 df-mpt 5192 df-tr 5218 df-id 5555 df-eprel 5560 df-po 5568 df-so 5569 df-fr 5613 df-we 5615 df-xp 5666 df-rel 5667 df-cnv 5668 df-co 5669 df-dm 5670 df-rn 5671 df-res 5672 df-ima 5673 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7861 df-1st 7984 df-2nd 7985 df-frecs 8276 df-wrecs 8307 df-recs 8356 df-rdg 8395 df-1o 8451 df-er 8692 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11449 df-neg 11450 df-nn 12240 df-2 12309 df-3 12310 df-4 12311 df-5 12312 df-6 12313 df-7 12314 df-8 12315 df-9 12316 df-n0 12511 df-z 12598 df-dec 12718 df-uz 12869 df-fz 13542 df-struct 17213 df-sets 17230 df-slot 17248 df-ndx 17260 df-base 17276 df-ress 17297 df-hom 17340 df-cco 17341 df-resc 17874 df-estrc 18185 df-rnghm 20525 df-rngc 20727 |
| This theorem is used by: rngcresringcat 20779 |
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