Theorem funciso 17836

Description: The image of an isomorphism under a functor is an isomorphism. Proposition 3.21 of [Adamek] p. 32. (Contributed by Mario Carneiro, 3-Jan-2017.)

Hypotheses

Ref	Expression
funciso.b	⊢ 𝐵 = (Base‘𝐷)
funciso.s	⊢ 𝐼 = (Iso‘𝐷)
funciso.t	⊢ 𝐽 = (Iso‘𝐸)
funciso.f	⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺)
funciso.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
funciso.y	⊢ (𝜑 → 𝑌 ∈ 𝐵)
funciso.m	⊢ (𝜑 → 𝑀 ∈ (𝑋𝐼𝑌))

Assertion

Ref	Expression
funciso	⊢ (𝜑 → ((𝑋𝐺𝑌)‘𝑀) ∈ ((𝐹‘𝑋)𝐽(𝐹‘𝑌)))

Proof of Theorem funciso

Step	Hyp	Ref	Expression
1		eqid 2729	. 2 ⊢ (Base‘𝐸) = (Base‘𝐸)
2		eqid 2729	. 2 ⊢ (Inv‘𝐸) = (Inv‘𝐸)
3		funciso.f	. . . . 5 ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺)
4		df-br 5108	. . . . 5 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 ↔ ⟨𝐹, 𝐺⟩ ∈ (𝐷 Func 𝐸))
5	3, 4	sylib 218	. . . 4 ⊢ (𝜑 → ⟨𝐹, 𝐺⟩ ∈ (𝐷 Func 𝐸))
6		funcrcl 17825	. . . 4 ⊢ (⟨𝐹, 𝐺⟩ ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat))
7	5, 6	syl 17	. . 3 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat))
8	7	simprd 495	. 2 ⊢ (𝜑 → 𝐸 ∈ Cat)
9		funciso.b	. . . 4 ⊢ 𝐵 = (Base‘𝐷)
10	9, 1, 3	funcf1 17828	. . 3 ⊢ (𝜑 → 𝐹:𝐵⟶(Base‘𝐸))
11		funciso.x	. . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
12	10, 11	ffvelcdmd 7057	. 2 ⊢ (𝜑 → (𝐹‘𝑋) ∈ (Base‘𝐸))
13		funciso.y	. . 3 ⊢ (𝜑 → 𝑌 ∈ 𝐵)
14	10, 13	ffvelcdmd 7057	. 2 ⊢ (𝜑 → (𝐹‘𝑌) ∈ (Base‘𝐸))
15		funciso.t	. 2 ⊢ 𝐽 = (Iso‘𝐸)
16		eqid 2729	. . 3 ⊢ (Inv‘𝐷) = (Inv‘𝐷)
17		funciso.s	. . . 4 ⊢ 𝐼 = (Iso‘𝐷)
18	7	simpld 494	. . . 4 ⊢ (𝜑 → 𝐷 ∈ Cat)
19		funciso.m	. . . 4 ⊢ (𝜑 → 𝑀 ∈ (𝑋𝐼𝑌))
20	9, 17, 16, 18, 11, 13, 19	invisoinvr 17753	. . 3 ⊢ (𝜑 → 𝑀(𝑋(Inv‘𝐷)𝑌)((𝑋(Inv‘𝐷)𝑌)‘𝑀))
21	9, 16, 2, 3, 11, 13, 20	funcinv 17835	. 2 ⊢ (𝜑 → ((𝑋𝐺𝑌)‘𝑀)((𝐹‘𝑋)(Inv‘𝐸)(𝐹‘𝑌))((𝑌𝐺𝑋)‘((𝑋(Inv‘𝐷)𝑌)‘𝑀)))
22	1, 2, 8, 12, 14, 15, 21	inviso1 17728	1 ⊢ (𝜑 → ((𝑋𝐺𝑌)‘𝑀) ∈ ((𝐹‘𝑋)𝐽(𝐹‘𝑌)))

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1540   ∈ wcel 2109  ⟨cop 4595   class class class wbr 5107  ‘cfv 6511  (class class class)co 7387  Basecbs 17179  Catccat 17625  Invcinv 17707  Isociso 17708   Func cfunc 17816

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5234  ax-sep 5251  ax-nul 5261  ax-pow 5320  ax-pr 5387  ax-un 7711

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-rmo 3354  df-reu 3355  df-rab 3406  df-v 3449  df-sbc 3754  df-csb 3863  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-pw 4565  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4872  df-iun 4957  df-br 5108  df-opab 5170  df-mpt 5189  df-id 5533  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-ima 5651  df-iota 6464  df-fun 6513  df-fn 6514  df-f 6515  df-f1 6516  df-fo 6517  df-f1o 6518  df-fv 6519  df-riota 7344  df-ov 7390  df-oprab 7391  df-mpo 7392  df-1st 7968  df-2nd 7969  df-map 8801  df-ixp 8871  df-cat 17629  df-cid 17630  df-sect 17709  df-inv 17710  df-iso 17711  df-func 17820

This theorem is referenced by:  ffthiso  17893