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Theorem fuco23alem 49848
Description: The naturality property (nati 17923) 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 2740 . 2 (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸)
2 fuco23a.b . 2 (𝜑𝐵 ∈ (⟨𝐾, 𝐿⟩(𝐷 Nat 𝐸)⟨𝑅, 𝑆⟩))
3 eqid 2740 . 2 (Base‘𝐷) = (Base‘𝐷)
4 eqid 2740 . 2 (Hom ‘𝐷) = (Hom ‘𝐷)
5 fuco23alem.o . 2 · = (comp‘𝐸)
6 eqid 2740 . . . 4 (Base‘𝐶) = (Base‘𝐶)
7 eqid 2740 . . . . 5 (𝐶 Nat 𝐷) = (𝐶 Nat 𝐷)
8 fuco23a.a . . . . 5 (𝜑𝐴 ∈ (⟨𝐹, 𝐺⟩(𝐶 Nat 𝐷)⟨𝑀, 𝑁⟩))
97, 8natrcl2 49721 . . . 4 (𝜑𝐹(𝐶 Func 𝐷)𝐺)
106, 3, 9funcf1 17831 . . 3 (𝜑𝐹:(Base‘𝐶)⟶(Base‘𝐷))
11 fuco23a.x . . 3 (𝜑𝑋 ∈ (Base‘𝐶))
1210, 11ffvelcdmd 7033 . 2 (𝜑 → (𝐹𝑋) ∈ (Base‘𝐷))
137, 8natrcl3 49722 . . . 4 (𝜑𝑀(𝐶 Func 𝐷)𝑁)
146, 3, 13funcf1 17831 . . 3 (𝜑𝑀:(Base‘𝐶)⟶(Base‘𝐷))
1514, 11ffvelcdmd 7033 . 2 (𝜑 → (𝑀𝑋) ∈ (Base‘𝐷))
167, 8, 6, 4, 11natcl 17921 . 2 (𝜑 → (𝐴𝑋) ∈ ((𝐹𝑋)(Hom ‘𝐷)(𝑀𝑋)))
171, 2, 3, 4, 5, 12, 15, 16nati 17923 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 1547  wcel 2119  cop 4568  cfv 6492  (class class class)co 7363  Basecbs 17177  Hom chom 17229  compcco 17230   Nat cnat 17909
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2712  ax-rep 5206  ax-sep 5225  ax-nul 5235  ax-pow 5301  ax-pr 5369  ax-un 7685
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2719  df-cleq 2732  df-clel 2815  df-nfc 2889  df-ne 2936  df-ral 3055  df-rex 3065  df-reu 3346  df-rab 3393  df-v 3434  df-sbc 3731  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4269  df-if 4462  df-pw 4538  df-sn 4563  df-pr 4565  df-op 4569  df-uni 4846  df-iun 4930  df-br 5080  df-opab 5142  df-mpt 5161  df-id 5520  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-rn 5636  df-res 5637  df-ima 5638  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-ov 7366  df-oprab 7367  df-mpo 7368  df-1st 7938  df-2nd 7939  df-map 8772  df-ixp 8843  df-func 17823  df-nat 17911
This theorem is referenced by:  fuco23a  49849  fucoco  49854
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