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Theorem uobeqterm 50899
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.
StepHypRef Expression
1 uobeqterm.e . . . 4 (𝜑 → 𝐸 ∈ TermCat)
2 eqid 2763 . . . . 5 (CatCat‘{𝐷, 𝐸}) = (CatCat‘{𝐷, 𝐸})
3 eqid 2763 . . . . 5 (Base‘(CatCat‘{𝐷, 𝐸})) = (Base‘(CatCat‘{𝐷, 𝐸}))
4 uobeqterm.d . . . . . . . 8 (𝜑 → 𝐷 ∈ TermCat)
5 prid1g 4721 . . . . . . . 8 (𝐷 ∈ TermCat → 𝐷 ∈ {𝐷, 𝐸})
64, 5syl 18 . . . . . . 7 (𝜑 → 𝐷 ∈ {𝐷, 𝐸})
74termccatd 50829 . . . . . . 7 (𝜑 → 𝐷 ∈ Cat)
86, 7elind 4100 . . . . . 6 (𝜑 → 𝐷 ∈ ({𝐷, 𝐸} ∩ Cat))
9 prex 5401 . . . . . . . 8 {𝐷, 𝐸} ∈ V
109a1i 11 . . . . . . 7 (𝜑 → {𝐷, 𝐸} ∈ V)
112, 3, 10catcbas 18308 . . . . . 6 (𝜑 → (Base‘(CatCat‘{𝐷, 𝐸})) = ({𝐷, 𝐸} ∩ Cat))
128, 11eleqtrrd 2867 . . . . 5 (𝜑 → 𝐷 ∈ (Base‘(CatCat‘{𝐷, 𝐸})))
13 prid2g 4722 . . . . . . . 8 (𝐸 ∈ TermCat → 𝐸 ∈ {𝐷, 𝐸})
141, 13syl 18 . . . . . . 7 (𝜑 → 𝐸 ∈ {𝐷, 𝐸})
151termccatd 50829 . . . . . . 7 (𝜑 → 𝐸 ∈ Cat)
1614, 15elind 4100 . . . . . 6 (𝜑 → 𝐸 ∈ ({𝐷, 𝐸} ∩ Cat))
1716, 11eleqtrrd 2867 . . . . 5 (𝜑 → 𝐸 ∈ (Base‘(CatCat‘{𝐷, 𝐸})))
182, 3, 12, 17, 4termcciso 50866 . . . 4 (𝜑 → (𝐸 ∈ TermCat ↔ 𝐷( ≃𝑐 ‘(CatCat‘{𝐷, 𝐸}))𝐸))
191, 18mpbid 235 . . 3 (𝜑 → 𝐷( ≃𝑐 ‘(CatCat‘{𝐷, 𝐸}))𝐸)
20 eqid 2763 . . . 4 (Iso‘(CatCat‘{𝐷, 𝐸})) = (Iso‘(CatCat‘{𝐷, 𝐸}))
212catccat 18315 . . . . 5 ({𝐷, 𝐸} ∈ V → (CatCat‘{𝐷, 𝐸}) ∈ Cat)
2210, 21syl 18 . . . 4 (𝜑 → (CatCat‘{𝐷, 𝐸}) ∈ Cat)
2320, 3, 22, 12, 17cic 18006 . . 3 (𝜑 → (𝐷( ≃𝑐 ‘(CatCat‘{𝐷, 𝐸}))𝐸 ↔ ∃𝑘 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)))
2419, 23mpbid 235 . 2 (𝜑 → ∃𝑘 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸))
25 uobeqterm.a . . 3 𝐴 = (Base‘𝐷)
26 uobeqterm.x . . . 4 (𝜑 → 𝑋 ∈ 𝐴)
2726adantr 486 . . 3 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑋 ∈ 𝐴)
28 uobeqterm.f . . . 4 (𝜑 → 𝐹 ∈ (𝐶 Func 𝐷))
2928adantr 486 . . 3 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝐹 ∈ (𝐶 Func 𝐷))
30 fullfunc 18115 . . . . 5 (𝐷 Full 𝐸) ⊆ (𝐷 Func 𝐸)
31 uobeqterm.b . . . . . . . 8 𝐵 = (Base‘𝐸)
32 simpr 490 . . . . . . . 8 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸))
332, 25, 31, 20, 32catcisoi 50750 . . . . . . 7 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (𝑘 ∈ ((𝐷 Full 𝐸) ∩ (𝐷 Faith 𝐸)) ∧ (1st ‘𝑘):𝐴⟶1-1onto𝐵))
3433simpld 500 . . . . . 6 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ ((𝐷 Full 𝐸) ∩ (𝐷 Faith 𝐸)))
3534elin1d 4104 . . . . 5 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ (𝐷 Full 𝐸))
3630, 35sselid 3911 . . . 4 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑘 ∈ (𝐷 Func 𝐸))
37 uobeqterm.g . . . . 5 (𝜑 → 𝐺 ∈ (𝐶 Func 𝐸))
3837adantr 486 . . . 4 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝐺 ∈ (𝐶 Func 𝐸))
391adantr 486 . . . 4 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝐸 ∈ TermCat)
4029, 36, 38, 39cofuterm 50898 . . 3 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (𝑘 ∘func 𝐹) = 𝐺)
4136func1st2nd 50405 . . . . . 6 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (1st ‘𝑘)(𝐷 Func 𝐸)(2nd ‘𝑘))
4225, 31, 41funcf1 18073 . . . . 5 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → (1st ‘𝑘):𝐴⟶𝐵)
4342, 27ffvelcdmd 7112 . . . 4 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → ((1st ‘𝑘)‘𝑋) ∈ 𝐵)
44 uobeqterm.y . . . . 5 (𝜑 → 𝑌 ∈ 𝐵)
4544adantr 486 . . . 4 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → 𝑌 ∈ 𝐵)
4639, 31, 43, 45termcbasmo 50833 . . 3 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → ((1st ‘𝑘)‘𝑋) = 𝑌)
4725, 27, 29, 40, 46, 2, 20, 32uobeq3 50752 . 2 ((𝜑 ∧ 𝑘 ∈ (𝐷(Iso‘(CatCat‘{𝐷, 𝐸}))𝐸)) → dom (𝐹(𝐶 UP 𝐷)𝑋) = dom (𝐺(𝐶 UP 𝐸)𝑌))
4824, 47exlimddv 1970 1 (𝜑 → dom (𝐹(𝐶 UP 𝐷)𝑋) = dom (𝐺(𝐶 UP 𝐸)𝑌))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570  ∃wex 1812   ∈ wcel 2147  Vcvv 3454   ∩ cin 4092  {cpr 4590   class class class wbr 5106  dom cdm 5656  ⟶1-1ontowf1o 6560  ‘cfv 6561  (class class class)co 7446  1st c1st 8026  2nd c2nd 8027  Basecbs 17419  Catccat 17870  Isociso 17953   ≃𝑐 ccic 18002   Func cfunc 18061   Full cful 18111   Faith cfth 18112  CatCatccatc 18305   UP cup 50504  TermCatctermc 50822
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 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5236  ax-sep 5253  ax-nul 5264  ax-pow 5332  ax-pr 5396  ax-un 7778  ax-cnex 11286  ax-resscn 11287  ax-1cn 11288  ax-icn 11289  ax-addcl 11290  ax-addrcl 11291  ax-mulcl 11292  ax-mulrcl 11293  ax-mulcom 11294  ax-addass 11295  ax-mulass 11296  ax-distr 11297  ax-i2m1 11298  ax-1ne0 11299  ax-1rid 11300  ax-rnegex 11301  ax-rrecex 11302  ax-cnre 11303  ax-pre-lttri 11304  ax-pre-lttrn 11305  ax-pre-ltadd 11306  ax-pre-mulgt0 11307
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 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-tp 4593  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5172  df-mpt 5191  df-tr 5217  df-id 5551  df-eprel 5556  df-po 5564  df-so 5565  df-fr 5609  df-we 5611  df-xp 5662  df-rel 5663  df-cnv 5664  df-co 5665  df-dm 5666  df-rn 5667  df-res 5668  df-ima 5669  df-pred 6325  df-ord 6386  df-on 6387  df-lim 6388  df-suc 6389  df-iota 6515  df-fun 6563  df-fn 6564  df-f 6565  df-f1 6566  df-fo 6567  df-f1o 6568  df-fv 6569  df-riota 7403  df-ov 7449  df-oprab 7450  df-mpo 7451  df-om 7905  df-1st 8028  df-2nd 8029  df-supp 8208  df-tpos 8274  df-frecs 8330  df-wrecs 8361  df-recs 8410  df-rdg 8449  df-1o 8507  df-er 8748  df-map 8880  df-ixp 8957  df-en 9005  df-dom 9006  df-sdom 9007  df-fin 9008  df-pnf 11375  df-mnf 11376  df-xr 11377  df-ltxr 11378  df-le 11379  df-sub 11573  df-neg 11574  df-nn 12366  df-2 12435  df-3 12436  df-4 12437  df-5 12438  df-6 12439  df-7 12440  df-8 12441  df-9 12442  df-n0 12637  df-z 12724  df-dec 12845  df-uz 12996  df-fz 13670  df-struct 17357  df-sets 17374  df-slot 17392  df-ndx 17404  df-base 17420  df-hom 17484  df-cco 17485  df-cat 17874  df-cid 17875  df-homf 17876  df-comf 17877  df-oppc 17918  df-sect 17954  df-inv 17955  df-iso 17956  df-cic 18003  df-func 18065  df-idfu 18066  df-cofu 18067  df-full 18113  df-fth 18114  df-nat 18153  df-fuc 18154  df-inito 18191  df-termo 18192  df-catc 18306  df-up 50505  df-thinc 50768  df-termc 50823
This theorem is used by:  isinito4  50900
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