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Theorem fuco23alem 50688
Description: The naturality property (nati 18165) in category 𝐸. (Contributed by Zhi Wang, 3-Oct-2025.)
Hypotheses
Ref Expression
fuco23a.a (𝜑 → 𝐴 ∈ (⟨𝐹, 𝐺⟩(𝐶 Nat 𝐷)⟨𝑀, 𝑁⟩))
fuco23a.b (𝜑 → 𝐵 ∈ (⟨𝐾, 𝐿⟩(𝐷 Nat 𝐸)⟨𝑅, 𝑆⟩))
fuco23a.x (𝜑 → 𝑋 ∈ (Base‘𝐶))
fuco23alem.o · = (comp‘𝐸)
Assertion
Ref Expression
fuco23alem (𝜑 → ((𝐵‘(𝑀‘𝑋))(⟨(𝐾‘(𝐹‘𝑋)), (𝐾‘(𝑀‘𝑋))⟩ · (𝑅‘(𝑀‘𝑋)))(((𝐹‘𝑋)𝐿(𝑀‘𝑋))‘(𝐴‘𝑋))) = ((((𝐹‘𝑋)𝑆(𝑀‘𝑋))‘(𝐴‘𝑋))(⟨(𝐾‘(𝐹‘𝑋)), (𝑅‘(𝐹‘𝑋))⟩ · (𝑅‘(𝑀‘𝑋)))(𝐵‘(𝐹‘𝑋))))

Proof of Theorem fuco23alem
StepHypRef Expression
1 eqid 2763 . 2 (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸)
2 fuco23a.b . 2 (𝜑 → 𝐵 ∈ (⟨𝐾, 𝐿⟩(𝐷 Nat 𝐸)⟨𝑅, 𝑆⟩))
3 eqid 2763 . 2 (Base‘𝐷) = (Base‘𝐷)
4 eqid 2763 . 2 (Hom ‘𝐷) = (Hom ‘𝐷)
5 fuco23alem.o . 2 · = (comp‘𝐸)
6 eqid 2763 . . . 4 (Base‘𝐶) = (Base‘𝐶)
7 eqid 2763 . . . . 5 (𝐶 Nat 𝐷) = (𝐶 Nat 𝐷)
8 fuco23a.a . . . . 5 (𝜑 → 𝐴 ∈ (⟨𝐹, 𝐺⟩(𝐶 Nat 𝐷)⟨𝑀, 𝑁⟩))
97, 8natrcl2 50555 . . . 4 (𝜑 → 𝐹(𝐶 Func 𝐷)𝐺)
106, 3, 9funcf1 18073 . . 3 (𝜑 → 𝐹:(Base‘𝐶)⟶(Base‘𝐷))
11 fuco23a.x . . 3 (𝜑 → 𝑋 ∈ (Base‘𝐶))
1210, 11ffvelcdmd 7112 . 2 (𝜑 → (𝐹‘𝑋) ∈ (Base‘𝐷))
137, 8natrcl3 50556 . . . 4 (𝜑 → 𝑀(𝐶 Func 𝐷)𝑁)
146, 3, 13funcf1 18073 . . 3 (𝜑 → 𝑀:(Base‘𝐶)⟶(Base‘𝐷))
1514, 11ffvelcdmd 7112 . 2 (𝜑 → (𝑀‘𝑋) ∈ (Base‘𝐷))
167, 8, 6, 4, 11natcl 18163 . 2 (𝜑 → (𝐴‘𝑋) ∈ ((𝐹‘𝑋)(Hom ‘𝐷)(𝑀‘𝑋)))
171, 2, 3, 4, 5, 12, 15, 16nati 18165 1 (𝜑 → ((𝐵‘(𝑀‘𝑋))(⟨(𝐾‘(𝐹‘𝑋)), (𝐾‘(𝑀‘𝑋))⟩ · (𝑅‘(𝑀‘𝑋)))(((𝐹‘𝑋)𝐿(𝑀‘𝑋))‘(𝐴‘𝑋))) = ((((𝐹‘𝑋)𝑆(𝑀‘𝑋))‘(𝐴‘𝑋))(⟨(𝐾‘(𝐹‘𝑋)), (𝑅‘(𝐹‘𝑋))⟩ · (𝑅‘(𝑀‘𝑋)))(𝐵‘(𝐹‘𝑋))))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1570   ∈ wcel 2147  ⟨cop 4838  ‘cfv 6561  (class class class)co 7446  Basecbs 17419  Hom chom 17471  compcco 17472   Nat cnat 18151
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5236  ax-sep 5253  ax-nul 5264  ax-pow 5332  ax-pr 5396  ax-un 7778
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-ral 3081  df-rex 3091  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5172  df-mpt 5191  df-id 5551  df-xp 5662  df-rel 5663  df-cnv 5664  df-co 5665  df-dm 5666  df-rn 5667  df-res 5668  df-ima 5669  df-iota 6515  df-fun 6563  df-fn 6564  df-f 6565  df-f1 6566  df-fo 6567  df-f1o 6568  df-fv 6569  df-ov 7449  df-oprab 7450  df-mpo 7451  df-1st 8028  df-2nd 8029  df-map 8880  df-ixp 8957  df-func 18065  df-nat 18153
This theorem is used by:  fuco23a  50689  fucoco  50694
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