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Theorem fuco23alem 49838
Description: The naturality property (nati 17916) 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 49711 . . . 4 (𝜑𝐹(𝐶 Func 𝐷)𝐺)
106, 3, 9funcf1 17824 . . 3 (𝜑𝐹:(Base‘𝐶)⟶(Base‘𝐷))
11 fuco23a.x . . 3 (𝜑𝑋 ∈ (Base‘𝐶))
1210, 11ffvelcdmd 7031 . 2 (𝜑 → (𝐹𝑋) ∈ (Base‘𝐷))
137, 8natrcl3 49712 . . . 4 (𝜑𝑀(𝐶 Func 𝐷)𝑁)
146, 3, 13funcf1 17824 . . 3 (𝜑𝑀:(Base‘𝐶)⟶(Base‘𝐷))
1514, 11ffvelcdmd 7031 . 2 (𝜑 → (𝑀𝑋) ∈ (Base‘𝐷))
167, 8, 6, 4, 11natcl 17914 . 2 (𝜑 → (𝐴𝑋) ∈ ((𝐹𝑋)(Hom ‘𝐷)(𝑀𝑋)))
171, 2, 3, 4, 5, 12, 15, 16nati 17916 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 1542  wcel 2114  cop 4574  cfv 6492  (class class class)co 7360  Basecbs 17170  Hom chom 17222  compcco 17223   Nat cnat 17902
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pow 5302  ax-pr 5370  ax-un 7682
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-reu 3344  df-rab 3391  df-v 3432  df-sbc 3730  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-pw 4544  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-iun 4936  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  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 7363  df-oprab 7364  df-mpo 7365  df-1st 7935  df-2nd 7936  df-map 8768  df-ixp 8839  df-func 17816  df-nat 17904
This theorem is referenced by:  fuco23a  49839  fucoco  49844
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