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Theorem fuco23alem 48918
Description: The naturality property (nati 18019) in category 𝐸. (Contributed by Zhi Wang, 3-Oct-2025.)
Hypotheses
Ref Expression
fuco23a.a (𝜑𝐴 ∈ (⟨𝐹, 𝐺⟩(𝐶 Nat 𝐷)⟨𝑀, 𝑁⟩))
fuco23a.b (𝜑𝐵 ∈ (⟨𝐾, 𝐿⟩(𝐷 Nat 𝐸)⟨𝑅, 𝑆⟩))
fuco23a.x (𝜑𝑋 ∈ (Base‘𝐶))
fuco23alem.o · = (comp‘𝐸)
Assertion
Ref Expression
fuco23alem (𝜑 → ((𝐵‘(𝑀𝑋))(⟨(𝐾‘(𝐹𝑋)), (𝐾‘(𝑀𝑋))⟩ · (𝑅‘(𝑀𝑋)))(((𝐹𝑋)𝐿(𝑀𝑋))‘(𝐴𝑋))) = ((((𝐹𝑋)𝑆(𝑀𝑋))‘(𝐴𝑋))(⟨(𝐾‘(𝐹𝑋)), (𝑅‘(𝐹𝑋))⟩ · (𝑅‘(𝑀𝑋)))(𝐵‘(𝐹𝑋))))

Proof of Theorem fuco23alem
StepHypRef Expression
1 eqid 2737 . 2 (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸)
2 fuco23a.b . 2 (𝜑𝐵 ∈ (⟨𝐾, 𝐿⟩(𝐷 Nat 𝐸)⟨𝑅, 𝑆⟩))
3 eqid 2737 . 2 (Base‘𝐷) = (Base‘𝐷)
4 eqid 2737 . 2 (Hom ‘𝐷) = (Hom ‘𝐷)
5 fuco23alem.o . 2 · = (comp‘𝐸)
6 eqid 2737 . . . 4 (Base‘𝐶) = (Base‘𝐶)
7 eqid 2737 . . . . 5 (𝐶 Nat 𝐷) = (𝐶 Nat 𝐷)
8 fuco23a.a . . . . 5 (𝜑𝐴 ∈ (⟨𝐹, 𝐺⟩(𝐶 Nat 𝐷)⟨𝑀, 𝑁⟩))
97, 8natrcl2 48870 . . . 4 (𝜑𝐹(𝐶 Func 𝐷)𝐺)
106, 3, 9funcf1 17926 . . 3 (𝜑𝐹:(Base‘𝐶)⟶(Base‘𝐷))
11 fuco23a.x . . 3 (𝜑𝑋 ∈ (Base‘𝐶))
1210, 11ffvelcdmd 7112 . 2 (𝜑 → (𝐹𝑋) ∈ (Base‘𝐷))
137, 8natrcl3 48871 . . . 4 (𝜑𝑀(𝐶 Func 𝐷)𝑁)
146, 3, 13funcf1 17926 . . 3 (𝜑𝑀:(Base‘𝐶)⟶(Base‘𝐷))
1514, 11ffvelcdmd 7112 . 2 (𝜑 → (𝑀𝑋) ∈ (Base‘𝐷))
167, 8, 6, 4, 11natcl 18017 . 2 (𝜑 → (𝐴𝑋) ∈ ((𝐹𝑋)(Hom ‘𝐷)(𝑀𝑋)))
171, 2, 3, 4, 5, 12, 15, 16nati 18019 1 (𝜑 → ((𝐵‘(𝑀𝑋))(⟨(𝐾‘(𝐹𝑋)), (𝐾‘(𝑀𝑋))⟩ · (𝑅‘(𝑀𝑋)))(((𝐹𝑋)𝐿(𝑀𝑋))‘(𝐴𝑋))) = ((((𝐹𝑋)𝑆(𝑀𝑋))‘(𝐴𝑋))(⟨(𝐾‘(𝐹𝑋)), (𝑅‘(𝐹𝑋))⟩ · (𝑅‘(𝑀𝑋)))(𝐵‘(𝐹𝑋))))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1539  wcel 2108  cop 4640  cfv 6569  (class class class)co 7438  Basecbs 17254  Hom chom 17318  compcco 17319   Nat cnat 18005
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1794  ax-4 1808  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2708  ax-rep 5288  ax-sep 5305  ax-nul 5315  ax-pow 5374  ax-pr 5441  ax-un 7761
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1542  df-fal 1552  df-ex 1779  df-nf 1783  df-sb 2065  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ne 2941  df-ral 3062  df-rex 3071  df-reu 3381  df-rab 3437  df-v 3483  df-sbc 3795  df-csb 3912  df-dif 3969  df-un 3971  df-in 3973  df-ss 3983  df-nul 4343  df-if 4535  df-pw 4610  df-sn 4635  df-pr 4637  df-op 4641  df-uni 4916  df-iun 5001  df-br 5152  df-opab 5214  df-mpt 5235  df-id 5587  df-xp 5699  df-rel 5700  df-cnv 5701  df-co 5702  df-dm 5703  df-rn 5704  df-res 5705  df-ima 5706  df-iota 6522  df-fun 6571  df-fn 6572  df-f 6573  df-f1 6574  df-fo 6575  df-f1o 6576  df-fv 6577  df-ov 7441  df-oprab 7442  df-mpo 7443  df-1st 8022  df-2nd 8023  df-map 8876  df-ixp 8946  df-func 17918  df-nat 18007
This theorem is referenced by:  fuco23a  48919  fucoco  48924
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