Theorem fuco23alem 49826

Description: The naturality property (nati 17925) 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

Step	Hyp	Ref	Expression
1		eqid 2736	. 2 ⊢ (𝐷 Nat 𝐸) = (𝐷 Nat 𝐸)
2		fuco23a.b	. 2 ⊢ (𝜑 → 𝐵 ∈ (⟨𝐾, 𝐿⟩(𝐷 Nat 𝐸)⟨𝑅, 𝑆⟩))
3		eqid 2736	. 2 ⊢ (Base‘𝐷) = (Base‘𝐷)
4		eqid 2736	. 2 ⊢ (Hom ‘𝐷) = (Hom ‘𝐷)
5		fuco23alem.o	. 2 ⊢ · = (comp‘𝐸)
6		eqid 2736	. . . 4 ⊢ (Base‘𝐶) = (Base‘𝐶)
7		eqid 2736	. . . . 5 ⊢ (𝐶 Nat 𝐷) = (𝐶 Nat 𝐷)
8		fuco23a.a	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ (⟨𝐹, 𝐺⟩(𝐶 Nat 𝐷)⟨𝑀, 𝑁⟩))
9	7, 8	natrcl2 49699	. . . 4 ⊢ (𝜑 → 𝐹(𝐶 Func 𝐷)𝐺)
10	6, 3, 9	funcf1 17833	. . 3 ⊢ (𝜑 → 𝐹:(Base‘𝐶)⟶(Base‘𝐷))
11		fuco23a.x	. . 3 ⊢ (𝜑 → 𝑋 ∈ (Base‘𝐶))
12	10, 11	ffvelcdmd 7037	. 2 ⊢ (𝜑 → (𝐹‘𝑋) ∈ (Base‘𝐷))
13	7, 8	natrcl3 49700	. . . 4 ⊢ (𝜑 → 𝑀(𝐶 Func 𝐷)𝑁)
14	6, 3, 13	funcf1 17833	. . 3 ⊢ (𝜑 → 𝑀:(Base‘𝐶)⟶(Base‘𝐷))
15	14, 11	ffvelcdmd 7037	. 2 ⊢ (𝜑 → (𝑀‘𝑋) ∈ (Base‘𝐷))
16	7, 8, 6, 4, 11	natcl 17923	. 2 ⊢ (𝜑 → (𝐴‘𝑋) ∈ ((𝐹‘𝑋)(Hom ‘𝐷)(𝑀‘𝑋)))
17	1, 2, 3, 4, 5, 12, 15, 16	nati 17925	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))))

Syntax hints:   → wi 4   = wceq 1542   ∈ wcel 2114  ⟨cop 4573  ‘cfv 6498  (class class class)co 7367  Basecbs 17179  Hom chom 17231  compcco 17232   Nat cnat 17911

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 2708  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pow 5307  ax-pr 5375  ax-un 7689

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 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-reu 3343  df-rab 3390  df-v 3431  df-sbc 3729  df-csb 3838  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-iun 4935  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-f1 6503  df-fo 6504  df-f1o 6505  df-fv 6506  df-ov 7370  df-oprab 7371  df-mpo 7372  df-1st 7942  df-2nd 7943  df-map 8775  df-ixp 8846  df-func 17825  df-nat 17913

This theorem is referenced by:  fuco23a  49827  fucoco  49832