Users' Mathboxes Mathbox for Alexander van der Vekens < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  dfrngc2 Structured version   Visualization version   GIF version

Theorem dfrngc2 42771
Description: Alternate definition of the category of non-unital rings (in a universe). (Contributed by AV, 16-Mar-2020.)
Hypotheses
Ref Expression
dfrngc2.c 𝐶 = (RngCat‘𝑈)
dfrngc2.u (𝜑𝑈𝑉)
dfrngc2.b (𝜑𝐵 = (𝑈 ∩ Rng))
dfrngc2.h (𝜑𝐻 = ( RngHomo ↾ (𝐵 × 𝐵)))
dfrngc2.o (𝜑· = (comp‘(ExtStrCat‘𝑈)))
Assertion
Ref Expression
dfrngc2 (𝜑𝐶 = {⟨(Base‘ndx), 𝐵⟩, ⟨(Hom ‘ndx), 𝐻⟩, ⟨(comp‘ndx), · ⟩})

Proof of Theorem dfrngc2
Dummy variables 𝑓 𝑔 𝑣 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 dfrngc2.c . . 3 𝐶 = (RngCat‘𝑈)
2 dfrngc2.u . . 3 (𝜑𝑈𝑉)
3 dfrngc2.b . . 3 (𝜑𝐵 = (𝑈 ∩ Rng))
4 dfrngc2.h . . 3 (𝜑𝐻 = ( RngHomo ↾ (𝐵 × 𝐵)))
51, 2, 3, 4rngcval 42761 . 2 (𝜑𝐶 = ((ExtStrCat‘𝑈) ↾cat 𝐻))
6 eqid 2799 . . 3 ((ExtStrCat‘𝑈) ↾cat 𝐻) = ((ExtStrCat‘𝑈) ↾cat 𝐻)
7 fvexd 6426 . . 3 (𝜑 → (ExtStrCat‘𝑈) ∈ V)
8 inex1g 4996 . . . . 5 (𝑈𝑉 → (𝑈 ∩ Rng) ∈ V)
92, 8syl 17 . . . 4 (𝜑 → (𝑈 ∩ Rng) ∈ V)
103, 9eqeltrd 2878 . . 3 (𝜑𝐵 ∈ V)
113, 4rnghmresfn 42762 . . 3 (𝜑𝐻 Fn (𝐵 × 𝐵))
126, 7, 10, 11rescval2 16802 . 2 (𝜑 → ((ExtStrCat‘𝑈) ↾cat 𝐻) = (((ExtStrCat‘𝑈) ↾s 𝐵) sSet ⟨(Hom ‘ndx), 𝐻⟩))
13 eqid 2799 . . . 4 (ExtStrCat‘𝑈) = (ExtStrCat‘𝑈)
14 eqidd 2800 . . . 4 (𝜑 → (𝑥𝑈, 𝑦𝑈 ↦ ((Base‘𝑦) ↑𝑚 (Base‘𝑥))) = (𝑥𝑈, 𝑦𝑈 ↦ ((Base‘𝑦) ↑𝑚 (Base‘𝑥))))
15 dfrngc2.o . . . . 5 (𝜑· = (comp‘(ExtStrCat‘𝑈)))
16 eqid 2799 . . . . . 6 (comp‘(ExtStrCat‘𝑈)) = (comp‘(ExtStrCat‘𝑈))
1713, 2, 16estrccofval 17083 . . . . 5 (𝜑 → (comp‘(ExtStrCat‘𝑈)) = (𝑣 ∈ (𝑈 × 𝑈), 𝑧𝑈 ↦ (𝑔 ∈ ((Base‘𝑧) ↑𝑚 (Base‘(2nd𝑣))), 𝑓 ∈ ((Base‘(2nd𝑣)) ↑𝑚 (Base‘(1st𝑣))) ↦ (𝑔𝑓))))
1815, 17eqtrd 2833 . . . 4 (𝜑· = (𝑣 ∈ (𝑈 × 𝑈), 𝑧𝑈 ↦ (𝑔 ∈ ((Base‘𝑧) ↑𝑚 (Base‘(2nd𝑣))), 𝑓 ∈ ((Base‘(2nd𝑣)) ↑𝑚 (Base‘(1st𝑣))) ↦ (𝑔𝑓))))
1913, 2, 14, 18estrcval 17078 . . 3 (𝜑 → (ExtStrCat‘𝑈) = {⟨(Base‘ndx), 𝑈⟩, ⟨(Hom ‘ndx), (𝑥𝑈, 𝑦𝑈 ↦ ((Base‘𝑦) ↑𝑚 (Base‘𝑥)))⟩, ⟨(comp‘ndx), · ⟩})
20 mpt2exga 7482 . . . 4 ((𝑈𝑉𝑈𝑉) → (𝑥𝑈, 𝑦𝑈 ↦ ((Base‘𝑦) ↑𝑚 (Base‘𝑥))) ∈ V)
212, 2, 20syl2anc 580 . . 3 (𝜑 → (𝑥𝑈, 𝑦𝑈 ↦ ((Base‘𝑦) ↑𝑚 (Base‘𝑥))) ∈ V)
22 fvexd 6426 . . . 4 (𝜑 → (comp‘(ExtStrCat‘𝑈)) ∈ V)
2315, 22eqeltrd 2878 . . 3 (𝜑· ∈ V)
24 rnghmfn 42689 . . . . . 6 RngHomo Fn (Rng × Rng)
25 fnfun 6199 . . . . . 6 ( RngHomo Fn (Rng × Rng) → Fun RngHomo )
2624, 25mp1i 13 . . . . 5 (𝜑 → Fun RngHomo )
27 sqxpexg 7197 . . . . . 6 (𝐵 ∈ V → (𝐵 × 𝐵) ∈ V)
2810, 27syl 17 . . . . 5 (𝜑 → (𝐵 × 𝐵) ∈ V)
29 resfunexg 6708 . . . . 5 ((Fun RngHomo ∧ (𝐵 × 𝐵) ∈ V) → ( RngHomo ↾ (𝐵 × 𝐵)) ∈ V)
3026, 28, 29syl2anc 580 . . . 4 (𝜑 → ( RngHomo ↾ (𝐵 × 𝐵)) ∈ V)
314, 30eqeltrd 2878 . . 3 (𝜑𝐻 ∈ V)
32 inss1 4028 . . . 4 (𝑈 ∩ Rng) ⊆ 𝑈
333, 32syl6eqss 3851 . . 3 (𝜑𝐵𝑈)
3419, 2, 21, 23, 31, 33estrres 17094 . 2 (𝜑 → (((ExtStrCat‘𝑈) ↾s 𝐵) sSet ⟨(Hom ‘ndx), 𝐻⟩) = {⟨(Base‘ndx), 𝐵⟩, ⟨(Hom ‘ndx), 𝐻⟩, ⟨(comp‘ndx), · ⟩})
355, 12, 343eqtrd 2837 1 (𝜑𝐶 = {⟨(Base‘ndx), 𝐵⟩, ⟨(Hom ‘ndx), 𝐻⟩, ⟨(comp‘ndx), · ⟩})
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1653  wcel 2157  Vcvv 3385  cin 3768  {ctp 4372  cop 4374   × cxp 5310  cres 5314  ccom 5316  Fun wfun 6095   Fn wfn 6096  cfv 6101  (class class class)co 6878  cmpt2 6880  1st c1st 7399  2nd c2nd 7400  𝑚 cmap 8095  ndxcnx 16181   sSet csts 16182  Basecbs 16184  s cress 16185  Hom chom 16278  compcco 16279  cat cresc 16782  ExtStrCatcestrc 17076  Rngcrng 42673   RngHomo crngh 42684  RngCatcrngc 42756
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1891  ax-4 1905  ax-5 2006  ax-6 2072  ax-7 2107  ax-8 2159  ax-9 2166  ax-10 2185  ax-11 2200  ax-12 2213  ax-13 2377  ax-ext 2777  ax-rep 4964  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5097  ax-un 7183  ax-cnex 10280  ax-resscn 10281  ax-1cn 10282  ax-icn 10283  ax-addcl 10284  ax-addrcl 10285  ax-mulcl 10286  ax-mulrcl 10287  ax-mulcom 10288  ax-addass 10289  ax-mulass 10290  ax-distr 10291  ax-i2m1 10292  ax-1ne0 10293  ax-1rid 10294  ax-rnegex 10295  ax-rrecex 10296  ax-cnre 10297  ax-pre-lttri 10298  ax-pre-lttrn 10299  ax-pre-ltadd 10300  ax-pre-mulgt0 10301
This theorem depends on definitions:  df-bi 199  df-an 386  df-or 875  df-3or 1109  df-3an 1110  df-tru 1657  df-fal 1667  df-ex 1876  df-nf 1880  df-sb 2065  df-mo 2591  df-eu 2609  df-clab 2786  df-cleq 2792  df-clel 2795  df-nfc 2930  df-ne 2972  df-nel 3075  df-ral 3094  df-rex 3095  df-reu 3096  df-rab 3098  df-v 3387  df-sbc 3634  df-csb 3729  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-pss 3785  df-nul 4116  df-if 4278  df-pw 4351  df-sn 4369  df-pr 4371  df-tp 4373  df-op 4375  df-uni 4629  df-int 4668  df-iun 4712  df-br 4844  df-opab 4906  df-mpt 4923  df-tr 4946  df-id 5220  df-eprel 5225  df-po 5233  df-so 5234  df-fr 5271  df-we 5273  df-xp 5318  df-rel 5319  df-cnv 5320  df-co 5321  df-dm 5322  df-rn 5323  df-res 5324  df-ima 5325  df-pred 5898  df-ord 5944  df-on 5945  df-lim 5946  df-suc 5947  df-iota 6064  df-fun 6103  df-fn 6104  df-f 6105  df-f1 6106  df-fo 6107  df-f1o 6108  df-fv 6109  df-riota 6839  df-ov 6881  df-oprab 6882  df-mpt2 6883  df-om 7300  df-1st 7401  df-2nd 7402  df-wrecs 7645  df-recs 7707  df-rdg 7745  df-1o 7799  df-oadd 7803  df-er 7982  df-en 8196  df-dom 8197  df-sdom 8198  df-fin 8199  df-pnf 10365  df-mnf 10366  df-xr 10367  df-ltxr 10368  df-le 10369  df-sub 10558  df-neg 10559  df-nn 11313  df-2 11376  df-3 11377  df-4 11378  df-5 11379  df-6 11380  df-7 11381  df-8 11382  df-9 11383  df-n0 11581  df-z 11667  df-dec 11784  df-uz 11931  df-fz 12581  df-struct 16186  df-ndx 16187  df-slot 16188  df-base 16190  df-sets 16191  df-ress 16192  df-hom 16291  df-cco 16292  df-resc 16785  df-estrc 17077  df-rnghomo 42686  df-rngc 42758
This theorem is referenced by:  rngcresringcat  42829
  Copyright terms: Public domain W3C validator