Theorem rngcbasALTV 45811

Description: Set of objects of the category of non-unital rings (in a universe). (New usage is discouraged.) (Contributed by AV, 27-Feb-2020.)

Hypotheses

Ref	Expression
rngcbasALTV.c	⊢ 𝐶 = (RngCatALTV‘𝑈)
rngcbasALTV.b	⊢ 𝐵 = (Base‘𝐶)
rngcbasALTV.u	⊢ (𝜑 → 𝑈 ∈ 𝑉)

Assertion

Ref	Expression
rngcbasALTV	⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng))

Proof of Theorem rngcbasALTV

Dummy variables 𝑓 𝑔 𝑣 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		rngcbasALTV.c	. . 3 ⊢ 𝐶 = (RngCatALTV‘𝑈)
2		rngcbasALTV.u	. . 3 ⊢ (𝜑 → 𝑈 ∈ 𝑉)
3		eqidd 2737	. . 3 ⊢ (𝜑 → (𝑈 ∩ Rng) = (𝑈 ∩ Rng))
4		eqidd 2737	. . 3 ⊢ (𝜑 → (𝑥 ∈ (𝑈 ∩ Rng), 𝑦 ∈ (𝑈 ∩ Rng) ↦ (𝑥 RngHomo 𝑦)) = (𝑥 ∈ (𝑈 ∩ Rng), 𝑦 ∈ (𝑈 ∩ Rng) ↦ (𝑥 RngHomo 𝑦)))
5		eqidd 2737	. . 3 ⊢ (𝜑 → (𝑣 ∈ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)), 𝑧 ∈ (𝑈 ∩ Rng) ↦ (𝑓 ∈ ((2nd ‘𝑣) RngHomo 𝑧), 𝑔 ∈ ((1st ‘𝑣) RngHomo (2nd ‘𝑣)) ↦ (𝑓 ∘ 𝑔))) = (𝑣 ∈ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)), 𝑧 ∈ (𝑈 ∩ Rng) ↦ (𝑓 ∈ ((2nd ‘𝑣) RngHomo 𝑧), 𝑔 ∈ ((1st ‘𝑣) RngHomo (2nd ‘𝑣)) ↦ (𝑓 ∘ 𝑔))))
6	1, 2, 3, 4, 5	rngcvalALTV 45789	. 2 ⊢ (𝜑 → 𝐶 = {⟨(Base‘ndx), (𝑈 ∩ Rng)⟩, ⟨(Hom ‘ndx), (𝑥 ∈ (𝑈 ∩ Rng), 𝑦 ∈ (𝑈 ∩ Rng) ↦ (𝑥 RngHomo 𝑦))⟩, ⟨(comp‘ndx), (𝑣 ∈ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)), 𝑧 ∈ (𝑈 ∩ Rng) ↦ (𝑓 ∈ ((2nd ‘𝑣) RngHomo 𝑧), 𝑔 ∈ ((1st ‘𝑣) RngHomo (2nd ‘𝑣)) ↦ (𝑓 ∘ 𝑔)))⟩})
7		catstr 17748	. 2 ⊢ {⟨(Base‘ndx), (𝑈 ∩ Rng)⟩, ⟨(Hom ‘ndx), (𝑥 ∈ (𝑈 ∩ Rng), 𝑦 ∈ (𝑈 ∩ Rng) ↦ (𝑥 RngHomo 𝑦))⟩, ⟨(comp‘ndx), (𝑣 ∈ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)), 𝑧 ∈ (𝑈 ∩ Rng) ↦ (𝑓 ∈ ((2nd ‘𝑣) RngHomo 𝑧), 𝑔 ∈ ((1st ‘𝑣) RngHomo (2nd ‘𝑣)) ↦ (𝑓 ∘ 𝑔)))⟩} Struct ⟨1, ;15⟩
8		baseid 16989	. 2 ⊢ Base = Slot (Base‘ndx)
9		snsstp1 4760	. 2 ⊢ {⟨(Base‘ndx), (𝑈 ∩ Rng)⟩} ⊆ {⟨(Base‘ndx), (𝑈 ∩ Rng)⟩, ⟨(Hom ‘ndx), (𝑥 ∈ (𝑈 ∩ Rng), 𝑦 ∈ (𝑈 ∩ Rng) ↦ (𝑥 RngHomo 𝑦))⟩, ⟨(comp‘ndx), (𝑣 ∈ ((𝑈 ∩ Rng) × (𝑈 ∩ Rng)), 𝑧 ∈ (𝑈 ∩ Rng) ↦ (𝑓 ∈ ((2nd ‘𝑣) RngHomo 𝑧), 𝑔 ∈ ((1st ‘𝑣) RngHomo (2nd ‘𝑣)) ↦ (𝑓 ∘ 𝑔)))⟩}
10		inex1g 5257	. . 3 ⊢ (𝑈 ∈ 𝑉 → (𝑈 ∩ Rng) ∈ V)
11	2, 10	syl 17	. 2 ⊢ (𝜑 → (𝑈 ∩ Rng) ∈ V)
12		rngcbasALTV.b	. 2 ⊢ 𝐵 = (Base‘𝐶)
13	6, 7, 8, 9, 11, 12	strfv3 16980	1 ⊢ (𝜑 → 𝐵 = (𝑈 ∩ Rng))

Syntax hints:   → wi 4   = wceq 1540   ∈ wcel 2105  Vcvv 3440   ∩ cin 3895  {ctp 4574  ⟨cop 4576   × cxp 5605   ∘ ccom 5611  ‘cfv 6465  (class class class)co 7316   ∈ cmpo 7318  1^st c1st 7875  2^nd c2nd 7876  1c1 10951  5c5 12110  ;cdc 12516  ndxcnx 16968  Basecbs 16986  Hom chom 17047  compcco 17048  Rngcrng 45702   RngHomo crngh 45713  RngCatALTVcrngcALTV 45786

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1912  ax-6 1970  ax-7 2010  ax-8 2107  ax-9 2115  ax-10 2136  ax-11 2153  ax-12 2170  ax-ext 2707  ax-sep 5237  ax-nul 5244  ax-pow 5302  ax-pr 5366  ax-un 7629  ax-cnex 11006  ax-resscn 11007  ax-1cn 11008  ax-icn 11009  ax-addcl 11010  ax-addrcl 11011  ax-mulcl 11012  ax-mulrcl 11013  ax-mulcom 11014  ax-addass 11015  ax-mulass 11016  ax-distr 11017  ax-i2m1 11018  ax-1ne0 11019  ax-1rid 11020  ax-rnegex 11021  ax-rrecex 11022  ax-cnre 11023  ax-pre-lttri 11024  ax-pre-lttrn 11025  ax-pre-ltadd 11026  ax-pre-mulgt0 11027

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1781  df-nf 1785  df-sb 2067  df-mo 2538  df-eu 2567  df-clab 2714  df-cleq 2728  df-clel 2814  df-nfc 2886  df-ne 2941  df-nel 3047  df-ral 3062  df-rex 3071  df-reu 3350  df-rab 3404  df-v 3442  df-sbc 3726  df-csb 3842  df-dif 3899  df-un 3901  df-in 3903  df-ss 3913  df-pss 3915  df-nul 4267  df-if 4471  df-pw 4546  df-sn 4571  df-pr 4573  df-tp 4575  df-op 4577  df-uni 4850  df-iun 4938  df-br 5087  df-opab 5149  df-mpt 5170  df-tr 5204  df-id 5506  df-eprel 5512  df-po 5520  df-so 5521  df-fr 5562  df-we 5564  df-xp 5613  df-rel 5614  df-cnv 5615  df-co 5616  df-dm 5617  df-rn 5618  df-res 5619  df-ima 5620  df-pred 6224  df-ord 6291  df-on 6292  df-lim 6293  df-suc 6294  df-iota 6417  df-fun 6467  df-fn 6468  df-f 6469  df-f1 6470  df-fo 6471  df-f1o 6472  df-fv 6473  df-riota 7273  df-ov 7319  df-oprab 7320  df-mpo 7321  df-om 7759  df-1st 7877  df-2nd 7878  df-frecs 8145  df-wrecs 8176  df-recs 8250  df-rdg 8289  df-1o 8345  df-er 8547  df-en 8783  df-dom 8784  df-sdom 8785  df-fin 8786  df-pnf 11090  df-mnf 11091  df-xr 11092  df-ltxr 11093  df-le 11094  df-sub 11286  df-neg 11287  df-nn 12053  df-2 12115  df-3 12116  df-4 12117  df-5 12118  df-6 12119  df-7 12120  df-8 12121  df-9 12122  df-n0 12313  df-z 12399  df-dec 12517  df-uz 12662  df-fz 13319  df-struct 16922  df-slot 16957  df-ndx 16969  df-base 16987  df-hom 17060  df-cco 17061  df-rngcALTV 45788

This theorem is referenced by:  rngchomfvalALTV  45812  rngccofvalALTV  45815  rngccatidALTV  45817  rngchomrnghmresALTV  45824  rhmsubcALTVlem3  45934  rhmsubcALTVlem4  45935