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Theorem fuco23alem 49936
Description: The naturality property (nati 17974) 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 2761 . 2 (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸)
2 fuco23a.b . 2 (𝜑𝐵 ∈ (⟨𝐾, 𝐿⟩(𝐷 Nat 𝐸)⟨𝑅, 𝑆⟩))
3 eqid 2761 . 2 (Base‘𝐷) = (Base‘𝐷)
4 eqid 2761 . 2 (Hom ‘𝐷) = (Hom ‘𝐷)
5 fuco23alem.o . 2 · = (comp‘𝐸)
6 eqid 2761 . . . 4 (Base‘𝐶) = (Base‘𝐶)
7 eqid 2761 . . . . 5 (𝐶 Nat 𝐷) = (𝐶 Nat 𝐷)
8 fuco23a.a . . . . 5 (𝜑𝐴 ∈ (⟨𝐹, 𝐺⟩(𝐶 Nat 𝐷)⟨𝑀, 𝑁⟩))
97, 8natrcl2 49809 . . . 4 (𝜑𝐹(𝐶 Func 𝐷)𝐺)
106, 3, 9funcf1 17882 . . 3 (𝜑𝐹:(Base‘𝐶)⟶(Base‘𝐷))
11 fuco23a.x . . 3 (𝜑𝑋 ∈ (Base‘𝐶))
1210, 11ffvelcdmd 7062 . 2 (𝜑 → (𝐹𝑋) ∈ (Base‘𝐷))
137, 8natrcl3 49810 . . . 4 (𝜑𝑀(𝐶 Func 𝐷)𝑁)
146, 3, 13funcf1 17882 . . 3 (𝜑𝑀:(Base‘𝐶)⟶(Base‘𝐷))
1514, 11ffvelcdmd 7062 . 2 (𝜑 → (𝑀𝑋) ∈ (Base‘𝐷))
167, 8, 6, 4, 11natcl 17972 . 2 (𝜑 → (𝐴𝑋) ∈ ((𝐹𝑋)(Hom ‘𝐷)(𝑀𝑋)))
171, 2, 3, 4, 5, 12, 15, 16nati 17974 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 1559  wcel 2141  cop 4587  cfv 6517  (class class class)co 7392  Basecbs 17228  Hom chom 17280  compcco 17281   Nat cnat 17960
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-10 2174  ax-11 2190  ax-12 2211  ax-ext 2733  ax-rep 5226  ax-sep 5245  ax-nul 5255  ax-pow 5321  ax-pr 5389  ax-un 7714
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-nf 1803  df-sb 2090  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3076  df-rex 3086  df-reu 3367  df-rab 3414  df-v 3455  df-sbc 3745  df-csb 3853  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-iun 4950  df-br 5100  df-opab 5162  df-mpt 5181  df-id 5540  df-xp 5651  df-rel 5652  df-cnv 5653  df-co 5654  df-dm 5655  df-rn 5656  df-res 5657  df-ima 5658  df-iota 6473  df-fun 6519  df-fn 6520  df-f 6521  df-f1 6522  df-fo 6523  df-f1o 6524  df-fv 6525  df-ov 7395  df-oprab 7396  df-mpo 7397  df-1st 7966  df-2nd 7967  df-map 8805  df-ixp 8876  df-func 17874  df-nat 17962
This theorem is referenced by:  fuco23a  49937  fucoco  49942
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