Theorem uobeqterm 49532

Description: Universal objects and terminal categories. (Contributed by Zhi Wang, 17-Nov-2025.)

Hypotheses

Ref	Expression
uobeqterm.a	⊢ 𝐴 = (Base‘𝐷)
uobeqterm.b	⊢ 𝐵 = (Base‘𝐸)
uobeqterm.x	⊢ (𝜑 → 𝑋 ∈ 𝐴)
uobeqterm.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)
uobeqterm.f	⊢ (𝜑 → 𝐹 ∈ (𝐶 Func 𝐷))
uobeqterm.g	⊢ (𝜑 → 𝐺 ∈ (𝐶 Func 𝐸))
uobeqterm.d	⊢ (𝜑 → 𝐷 ∈ TermCat)
uobeqterm.e	⊢ (𝜑 → 𝐸 ∈ TermCat)

Assertion

Ref	Expression
uobeqterm	⊢ (𝜑 → dom (𝐹(𝐶 UP 𝐷)𝑋) = dom (𝐺(𝐶 UP 𝐸)𝑌))

Proof of Theorem uobeqterm

Dummy variable 𝑘 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		uobeqterm.e	. . . 4 ⊢ (𝜑 → 𝐸 ∈ TermCat)
2		eqid 2729	. . . . 5 ⊢ (CatCat‘{𝐷, 𝐸}) = (CatCat‘{𝐷, 𝐸})
3		eqid 2729	. . . . 5 ⊢ (Base‘(CatCat‘{𝐷, 𝐸})) = (Base‘(CatCat‘{𝐷, 𝐸}))
4		uobeqterm.d	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ∈ TermCat)
5		prid1g 4714	. . . . . . . 8 ⊢ (𝐷 ∈ TermCat → 𝐷 ∈ {𝐷, 𝐸})
6	4, 5	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝐷 ∈ {𝐷, 𝐸})
7	4	termccd 49465	. . . . . . 7 ⊢ (𝜑 → 𝐷 ∈ Cat)
8	6, 7	elind 4153	. . . . . 6 ⊢ (𝜑 → 𝐷 ∈ ({𝐷, 𝐸} ∩ Cat))
9		prex 5379	. . . . . . . 8 ⊢ {𝐷, 𝐸} ∈ V
10	9	a1i 11	. . . . . . 7 ⊢ (𝜑 → {𝐷, 𝐸} ∈ V)
11	2, 3, 10	catcbas 18026	. . . . . 6 ⊢ (𝜑 → (Base‘(CatCat‘{𝐷, 𝐸})) = ({𝐷, 𝐸} ∩ Cat))
12	8, 11	eleqtrrd 2831	. . . . 5 ⊢ (𝜑 → 𝐷 ∈ (Base‘(CatCat‘{𝐷, 𝐸})))
13		prid2g 4715	. . . . . . . 8 ⊢ (𝐸 ∈ TermCat → 𝐸 ∈ {𝐷, 𝐸})
14	1, 13	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝐸 ∈ {𝐷, 𝐸})
15	1	termccd 49465	. . . . . . 7 ⊢ (𝜑 → 𝐸 ∈ Cat)
16	14, 15	elind 4153	. . . . . 6 ⊢ (𝜑 → 𝐸 ∈ ({𝐷, 𝐸} ∩ Cat))
17	16, 11	eleqtrrd 2831	. . . . 5 ⊢ (𝜑 → 𝐸 ∈ (Base‘(CatCat‘{𝐷, 𝐸})))
18	2, 3, 12, 17, 4	termcciso 49502	. . . 4 ⊢ (𝜑 → (𝐸 ∈ TermCat ↔ 𝐷( ≃𝑐 ‘(CatCat‘{𝐷, 𝐸}))𝐸))
19	1, 18	mpbid 232	. . 3 ⊢ (𝜑 → 𝐷( ≃𝑐 ‘(CatCat‘{𝐷, 𝐸}))𝐸)
20		eqid 2729	. . . 4 ⊢ (Iso‘(CatCat‘{𝐷, 𝐸})) = (Iso‘(CatCat‘{𝐷, 𝐸}))
21	2	catccat 18033	. . . . 5 ⊢ ({𝐷, 𝐸} ∈ V → (CatCat‘{𝐷, 𝐸}) ∈ Cat)
22	10, 21	syl 17	. . . 4 ⊢ (𝜑 → (CatCat‘{𝐷, 𝐸}) ∈ Cat)
23	20, 3, 22, 12, 17	cic 17724	. . 3 ⊢ (𝜑 → (𝐷( ≃𝑐 ‘(CatCat‘{𝐷, 𝐸}))𝐸 ↔ ∃𝑘 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)))
24	19, 23	mpbid 232	. 2 ⊢ (𝜑 → ∃𝑘 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸))
25		uobeqterm.a	. . 3 ⊢ 𝐴 = (Base‘𝐷)
26		uobeqterm.x	. . . 4 ⊢ (𝜑 → 𝑋 ∈ 𝐴)
27	26	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑋 ∈ 𝐴)
28		uobeqterm.f	. . . 4 ⊢ (𝜑 → 𝐹 ∈ (𝐶 Func 𝐷))
29	28	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝐹 ∈ (𝐶 Func 𝐷))
30		fullfunc 17833	. . . . 5 ⊢ (𝐷 Full 𝐸) ⊆ (𝐷 Func 𝐸)
31		uobeqterm.b	. . . . . . . 8 ⊢ 𝐵 = (Base‘𝐸)
32		simpr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸))
33	2, 25, 31, 20, 32	catcisoi 49386	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (𝑘 ∈ ((𝐷 Full 𝐸) ∩ (𝐷 Faith 𝐸)) ∧ (1st ‘𝑘):𝐴–1-1-onto→𝐵))
34	33	simpld 494	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ ((𝐷 Full 𝐸) ∩ (𝐷 Faith 𝐸)))
35	34	elin1d 4157	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ (𝐷 Full 𝐸))
36	30, 35	sselid 3935	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ (𝐷 Func 𝐸))
37		uobeqterm.g	. . . . 5 ⊢ (𝜑 → 𝐺 ∈ (𝐶 Func 𝐸))
38	37	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝐺 ∈ (𝐶 Func 𝐸))
39	1	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝐸 ∈ TermCat)
40	29, 36, 38, 39	cofuterm 49531	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (𝑘 ∘func 𝐹) = 𝐺)
41	36	func1st2nd 49062	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (1st ‘𝑘)(𝐷 Func 𝐸)(2nd ‘𝑘))
42	25, 31, 41	funcf1 17791	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (1st ‘𝑘):𝐴⟶𝐵)
43	42, 27	ffvelcdmd 7023	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → ((1st ‘𝑘)‘𝑋) ∈ 𝐵)
44		uobeqterm.y	. . . . 5 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
45	44	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑌 ∈ 𝐵)
46	39, 31, 43, 45	termcbasmo 49469	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → ((1st ‘𝑘)‘𝑋) = 𝑌)
47	25, 27, 29, 40, 46, 2, 20, 32	uobeq3 49388	. 2 ⊢ ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → dom (𝐹(𝐶 UP 𝐷)𝑋) = dom (𝐺(𝐶 UP 𝐸)𝑌))
48	24, 47	exlimddv 1935	1 ⊢ (𝜑 → dom (𝐹(𝐶 UP 𝐷)𝑋) = dom (𝐺(𝐶 UP 𝐸)𝑌))

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1540  ∃wex 1779   ∈ wcel 2109  Vcvv 3438   ∩ cin 3904  {cpr 4581   class class class wbr 5095  dom cdm 5623  –1-1-onto→wf1o 6485  ‘cfv 6486  (class class class)co 7353  1^st c1st 7929  2^nd c2nd 7930  Basecbs 17138  Catccat 17588  Isociso 17671   ≃_𝑐 ccic 17720   Func cfunc 17779   Full cful 17829   Faith cfth 17830  CatCatccatc 18023   UP cup 49159  TermCatctermc 49458

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 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7675  ax-cnex 11084  ax-resscn 11085  ax-1cn 11086  ax-icn 11087  ax-addcl 11088  ax-addrcl 11089  ax-mulcl 11090  ax-mulrcl 11091  ax-mulcom 11092  ax-addass 11093  ax-mulass 11094  ax-distr 11095  ax-i2m1 11096  ax-1ne0 11097  ax-1rid 11098  ax-rnegex 11099  ax-rrecex 11100  ax-cnre 11101  ax-pre-lttri 11102  ax-pre-lttrn 11103  ax-pre-ltadd 11104  ax-pre-mulgt0 11105

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-rmo 3345  df-reu 3346  df-rab 3397  df-v 3440  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-pss 3925  df-nul 4287  df-if 4479  df-pw 4555  df-sn 4580  df-pr 4582  df-tp 4584  df-op 4586  df-uni 4862  df-iun 4946  df-br 5096  df-opab 5158  df-mpt 5177  df-tr 5203  df-id 5518  df-eprel 5523  df-po 5531  df-so 5532  df-fr 5576  df-we 5578  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-pred 6253  df-ord 6314  df-on 6315  df-lim 6316  df-suc 6317  df-iota 6442  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-fv 6494  df-riota 7310  df-ov 7356  df-oprab 7357  df-mpo 7358  df-om 7807  df-1st 7931  df-2nd 7932  df-supp 8101  df-tpos 8166  df-frecs 8221  df-wrecs 8252  df-recs 8301  df-rdg 8339  df-1o 8395  df-er 8632  df-map 8762  df-ixp 8832  df-en 8880  df-dom 8881  df-sdom 8882  df-fin 8883  df-pnf 11170  df-mnf 11171  df-xr 11172  df-ltxr 11173  df-le 11174  df-sub 11367  df-neg 11368  df-nn 12147  df-2 12209  df-3 12210  df-4 12211  df-5 12212  df-6 12213  df-7 12214  df-8 12215  df-9 12216  df-n0 12403  df-z 12490  df-dec 12610  df-uz 12754  df-fz 13429  df-struct 17076  df-sets 17093  df-slot 17111  df-ndx 17123  df-base 17139  df-hom 17203  df-cco 17204  df-cat 17592  df-cid 17593  df-homf 17594  df-comf 17595  df-oppc 17636  df-sect 17672  df-inv 17673  df-iso 17674  df-cic 17721  df-func 17783  df-idfu 17784  df-cofu 17785  df-full 17831  df-fth 17832  df-nat 17871  df-fuc 17872  df-inito 17909  df-termo 17910  df-catc 18024  df-up 49160  df-thinc 49404  df-termc 49459

This theorem is referenced by:  isinito4  49533