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Theorem rcaninv 17056
Description: Right cancellation of an inverse of an isomorphism. (Contributed by AV, 5-Apr-2020.)
Hypotheses
Ref Expression
rcaninv.b 𝐵 = (Base‘𝐶)
rcaninv.n 𝑁 = (Inv‘𝐶)
rcaninv.c (𝜑𝐶 ∈ Cat)
rcaninv.x (𝜑𝑋𝐵)
rcaninv.y (𝜑𝑌𝐵)
rcaninv.z (𝜑𝑍𝐵)
rcaninv.f (𝜑𝐹 ∈ (𝑌(Iso‘𝐶)𝑋))
rcaninv.g (𝜑𝐺 ∈ (𝑌(Hom ‘𝐶)𝑍))
rcaninv.h (𝜑𝐻 ∈ (𝑌(Hom ‘𝐶)𝑍))
rcaninv.1 𝑅 = ((𝑌𝑁𝑋)‘𝐹)
rcaninv.o = (⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)
Assertion
Ref Expression
rcaninv (𝜑 → ((𝐺 𝑅) = (𝐻 𝑅) → 𝐺 = 𝐻))

Proof of Theorem rcaninv
StepHypRef Expression
1 rcaninv.b . . . . . 6 𝐵 = (Base‘𝐶)
2 eqid 2819 . . . . . 6 (Hom ‘𝐶) = (Hom ‘𝐶)
3 eqid 2819 . . . . . 6 (comp‘𝐶) = (comp‘𝐶)
4 rcaninv.c . . . . . 6 (𝜑𝐶 ∈ Cat)
5 rcaninv.y . . . . . 6 (𝜑𝑌𝐵)
6 rcaninv.x . . . . . 6 (𝜑𝑋𝐵)
7 eqid 2819 . . . . . . . 8 (Iso‘𝐶) = (Iso‘𝐶)
81, 2, 7, 4, 5, 6isohom 17038 . . . . . . 7 (𝜑 → (𝑌(Iso‘𝐶)𝑋) ⊆ (𝑌(Hom ‘𝐶)𝑋))
9 rcaninv.f . . . . . . 7 (𝜑𝐹 ∈ (𝑌(Iso‘𝐶)𝑋))
108, 9sseldd 3966 . . . . . 6 (𝜑𝐹 ∈ (𝑌(Hom ‘𝐶)𝑋))
111, 2, 7, 4, 6, 5isohom 17038 . . . . . . 7 (𝜑 → (𝑋(Iso‘𝐶)𝑌) ⊆ (𝑋(Hom ‘𝐶)𝑌))
12 rcaninv.n . . . . . . . . 9 𝑁 = (Inv‘𝐶)
131, 12, 4, 5, 6, 7invf 17030 . . . . . . . 8 (𝜑 → (𝑌𝑁𝑋):(𝑌(Iso‘𝐶)𝑋)⟶(𝑋(Iso‘𝐶)𝑌))
1413, 9ffvelrnd 6845 . . . . . . 7 (𝜑 → ((𝑌𝑁𝑋)‘𝐹) ∈ (𝑋(Iso‘𝐶)𝑌))
1511, 14sseldd 3966 . . . . . 6 (𝜑 → ((𝑌𝑁𝑋)‘𝐹) ∈ (𝑋(Hom ‘𝐶)𝑌))
16 rcaninv.z . . . . . 6 (𝜑𝑍𝐵)
17 rcaninv.g . . . . . 6 (𝜑𝐺 ∈ (𝑌(Hom ‘𝐶)𝑍))
181, 2, 3, 4, 5, 6, 5, 10, 15, 16, 17catass 16949 . . . . 5 (𝜑 → ((𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)((𝑌𝑁𝑋)‘𝐹))(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = (𝐺(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)))
19 eqid 2819 . . . . . . . 8 (Id‘𝐶) = (Id‘𝐶)
20 eqid 2819 . . . . . . . 8 (⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌) = (⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)
211, 7, 12, 4, 5, 6, 9, 19, 20invcoisoid 17054 . . . . . . 7 (𝜑 → (((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹) = ((Id‘𝐶)‘𝑌))
2221eqcomd 2825 . . . . . 6 (𝜑 → ((Id‘𝐶)‘𝑌) = (((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹))
2322oveq2d 7164 . . . . 5 (𝜑 → (𝐺(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)((Id‘𝐶)‘𝑌)) = (𝐺(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)))
241, 2, 19, 4, 5, 3, 16, 17catrid 16947 . . . . 5 (𝜑 → (𝐺(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)((Id‘𝐶)‘𝑌)) = 𝐺)
2518, 23, 243eqtr2rd 2861 . . . 4 (𝜑𝐺 = ((𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)((𝑌𝑁𝑋)‘𝐹))(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹))
2625adantr 483 . . 3 ((𝜑 ∧ (𝐺 𝑅) = (𝐻 𝑅)) → 𝐺 = ((𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)((𝑌𝑁𝑋)‘𝐹))(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹))
27 rcaninv.o . . . . . . . . 9 = (⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)
2827eqcomi 2828 . . . . . . . 8 (⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍) =
2928a1i 11 . . . . . . 7 (𝜑 → (⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍) = )
30 eqidd 2820 . . . . . . 7 (𝜑𝐺 = 𝐺)
31 rcaninv.1 . . . . . . . . 9 𝑅 = ((𝑌𝑁𝑋)‘𝐹)
3231eqcomi 2828 . . . . . . . 8 ((𝑌𝑁𝑋)‘𝐹) = 𝑅
3332a1i 11 . . . . . . 7 (𝜑 → ((𝑌𝑁𝑋)‘𝐹) = 𝑅)
3429, 30, 33oveq123d 7169 . . . . . 6 (𝜑 → (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)((𝑌𝑁𝑋)‘𝐹)) = (𝐺 𝑅))
3534adantr 483 . . . . 5 ((𝜑 ∧ (𝐺 𝑅) = (𝐻 𝑅)) → (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)((𝑌𝑁𝑋)‘𝐹)) = (𝐺 𝑅))
36 simpr 487 . . . . 5 ((𝜑 ∧ (𝐺 𝑅) = (𝐻 𝑅)) → (𝐺 𝑅) = (𝐻 𝑅))
3735, 36eqtrd 2854 . . . 4 ((𝜑 ∧ (𝐺 𝑅) = (𝐻 𝑅)) → (𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)((𝑌𝑁𝑋)‘𝐹)) = (𝐻 𝑅))
3837oveq1d 7163 . . 3 ((𝜑 ∧ (𝐺 𝑅) = (𝐻 𝑅)) → ((𝐺(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)((𝑌𝑁𝑋)‘𝐹))(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = ((𝐻 𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹))
3927oveqi 7161 . . . . . . 7 (𝐻 𝑅) = (𝐻(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)𝑅)
4039oveq1i 7158 . . . . . 6 ((𝐻 𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = ((𝐻(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹)
4140a1i 11 . . . . 5 (𝜑 → ((𝐻 𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = ((𝐻(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹))
4231, 15eqeltrid 2915 . . . . . . 7 (𝜑𝑅 ∈ (𝑋(Hom ‘𝐶)𝑌))
43 rcaninv.h . . . . . . 7 (𝜑𝐻 ∈ (𝑌(Hom ‘𝐶)𝑍))
441, 2, 3, 4, 5, 6, 5, 10, 42, 16, 43catass 16949 . . . . . 6 (𝜑 → ((𝐻(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(𝑅(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)))
4531oveq1i 7158 . . . . . . . 8 (𝑅(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹) = (((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)
4645oveq2i 7159 . . . . . . 7 (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(𝑅(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)) = (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹))
4746a1i 11 . . . . . 6 (𝜑 → (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(𝑅(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)) = (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)))
4821oveq2d 7164 . . . . . 6 (𝜑 → (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)(((𝑌𝑁𝑋)‘𝐹)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑌)𝐹)) = (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)((Id‘𝐶)‘𝑌)))
4944, 47, 483eqtrd 2858 . . . . 5 (𝜑 → ((𝐻(⟨𝑋, 𝑌⟩(comp‘𝐶)𝑍)𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)((Id‘𝐶)‘𝑌)))
501, 2, 19, 4, 5, 3, 16, 43catrid 16947 . . . . 5 (𝜑 → (𝐻(⟨𝑌, 𝑌⟩(comp‘𝐶)𝑍)((Id‘𝐶)‘𝑌)) = 𝐻)
5141, 49, 503eqtrd 2858 . . . 4 (𝜑 → ((𝐻 𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = 𝐻)
5251adantr 483 . . 3 ((𝜑 ∧ (𝐺 𝑅) = (𝐻 𝑅)) → ((𝐻 𝑅)(⟨𝑌, 𝑋⟩(comp‘𝐶)𝑍)𝐹) = 𝐻)
5326, 38, 523eqtrd 2858 . 2 ((𝜑 ∧ (𝐺 𝑅) = (𝐻 𝑅)) → 𝐺 = 𝐻)
5453ex 415 1 (𝜑 → ((𝐺 𝑅) = (𝐻 𝑅) → 𝐺 = 𝐻))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 398   = wceq 1530  wcel 2107  cop 4565  cfv 6348  (class class class)co 7148  Basecbs 16475  Hom chom 16568  compcco 16569  Catccat 16927  Idccid 16928  Invcinv 17007  Isociso 17008
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-ext 2791  ax-rep 5181  ax-sep 5194  ax-nul 5201  ax-pow 5257  ax-pr 5320  ax-un 7453
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2616  df-eu 2648  df-clab 2798  df-cleq 2812  df-clel 2891  df-nfc 2961  df-ne 3015  df-ral 3141  df-rex 3142  df-reu 3143  df-rmo 3144  df-rab 3145  df-v 3495  df-sbc 3771  df-csb 3882  df-dif 3937  df-un 3939  df-in 3941  df-ss 3950  df-nul 4290  df-if 4466  df-pw 4539  df-sn 4560  df-pr 4562  df-op 4566  df-uni 4831  df-iun 4912  df-br 5058  df-opab 5120  df-mpt 5138  df-id 5453  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-rn 5559  df-res 5560  df-ima 5561  df-iota 6307  df-fun 6350  df-fn 6351  df-f 6352  df-f1 6353  df-fo 6354  df-f1o 6355  df-fv 6356  df-riota 7106  df-ov 7151  df-oprab 7152  df-mpo 7153  df-1st 7681  df-2nd 7682  df-cat 16931  df-cid 16932  df-sect 17009  df-inv 17010  df-iso 17011
This theorem is referenced by:  initoeu2lem0  17265
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