Theorem ofrfval2 5998

Description: The function relation acting on maps. (Contributed by Mario Carneiro, 20-Jul-2014.)

Hypotheses

Ref	Expression
offval2.1	⊢ (𝜑 → 𝐴 ∈ 𝑉)
offval2.2	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑊)
offval2.3	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝑋)
offval2.4	⊢ (𝜑 → 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵))
offval2.5	⊢ (𝜑 → 𝐺 = (𝑥 ∈ 𝐴 ↦ 𝐶))

Assertion

Ref	Expression
ofrfval2	⊢ (𝜑 → (𝐹 ∘𝑟 𝑅𝐺 ↔ ∀𝑥 ∈ 𝐴 𝐵𝑅𝐶))

Distinct variable groups:   𝑥,𝐴   𝜑,𝑥   𝑥,𝑅

Allowed substitution hints:   𝐵(𝑥)   𝐶(𝑥)   𝐹(𝑥)   𝐺(𝑥)   𝑉(𝑥)   𝑊(𝑥)   𝑋(𝑥)

Proof of Theorem ofrfval2

Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		offval2.2	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ 𝑊)
2	1	ralrimiva 2505	. . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊)
3		eqid 2139	. . . . . 6 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵)
4	3	fnmpt 5249	. . . . 5 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑊 → (𝑥 ∈ 𝐴 ↦ 𝐵) Fn 𝐴)
5	2, 4	syl 14	. . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) Fn 𝐴)
6		offval2.4	. . . . 5 ⊢ (𝜑 → 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵))
7	6	fneq1d 5213	. . . 4 ⊢ (𝜑 → (𝐹 Fn 𝐴 ↔ (𝑥 ∈ 𝐴 ↦ 𝐵) Fn 𝐴))
8	5, 7	mpbird 166	. . 3 ⊢ (𝜑 → 𝐹 Fn 𝐴)
9		offval2.3	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ 𝑋)
10	9	ralrimiva 2505	. . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 𝐶 ∈ 𝑋)
11		eqid 2139	. . . . . 6 ⊢ (𝑥 ∈ 𝐴 ↦ 𝐶) = (𝑥 ∈ 𝐴 ↦ 𝐶)
12	11	fnmpt 5249	. . . . 5 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝑋 → (𝑥 ∈ 𝐴 ↦ 𝐶) Fn 𝐴)
13	10, 12	syl 14	. . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐶) Fn 𝐴)
14		offval2.5	. . . . 5 ⊢ (𝜑 → 𝐺 = (𝑥 ∈ 𝐴 ↦ 𝐶))
15	14	fneq1d 5213	. . . 4 ⊢ (𝜑 → (𝐺 Fn 𝐴 ↔ (𝑥 ∈ 𝐴 ↦ 𝐶) Fn 𝐴))
16	13, 15	mpbird 166	. . 3 ⊢ (𝜑 → 𝐺 Fn 𝐴)
17		offval2.1	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
18		inidm 3285	. . 3 ⊢ (𝐴 ∩ 𝐴) = 𝐴
19	6	adantr 274	. . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵))
20	19	fveq1d 5423	. . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → (𝐹‘𝑦) = ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦))
21	14	adantr 274	. . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → 𝐺 = (𝑥 ∈ 𝐴 ↦ 𝐶))
22	21	fveq1d 5423	. . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝐴) → (𝐺‘𝑦) = ((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦))
23	8, 16, 17, 17, 18, 20, 22	ofrfval 5990	. 2 ⊢ (𝜑 → (𝐹 ∘𝑟 𝑅𝐺 ↔ ∀𝑦 ∈ 𝐴 ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦)))
24		nffvmpt1 5432	. . . . 5 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦)
25		nfcv 2281	. . . . 5 ⊢ Ⅎ𝑥𝑅
26		nffvmpt1 5432	. . . . 5 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦)
27	24, 25, 26	nfbr 3974	. . . 4 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦)
28		nfv 1508	. . . 4 ⊢ Ⅎ𝑦((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥)
29		fveq2 5421	. . . . 5 ⊢ (𝑦 = 𝑥 → ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦) = ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥))
30		fveq2 5421	. . . . 5 ⊢ (𝑦 = 𝑥 → ((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦) = ((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥))
31	29, 30	breq12d 3942	. . . 4 ⊢ (𝑦 = 𝑥 → (((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦) ↔ ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥)))
32	27, 28, 31	cbvral 2650	. . 3 ⊢ (∀𝑦 ∈ 𝐴 ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦) ↔ ∀𝑥 ∈ 𝐴 ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥))
33		simpr 109	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝑥 ∈ 𝐴)
34	3	fvmpt2 5504	. . . . . 6 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝐵 ∈ 𝑊) → ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥) = 𝐵)
35	33, 1, 34	syl2anc 408	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥) = 𝐵)
36	11	fvmpt2 5504	. . . . . 6 ⊢ ((𝑥 ∈ 𝐴 ∧ 𝐶 ∈ 𝑋) → ((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥) = 𝐶)
37	33, 9, 36	syl2anc 408	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥) = 𝐶)
38	35, 37	breq12d 3942	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥) ↔ 𝐵𝑅𝐶))
39	38	ralbidva 2433	. . 3 ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑥)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑥) ↔ ∀𝑥 ∈ 𝐴 𝐵𝑅𝐶))
40	32, 39	syl5bb 191	. 2 ⊢ (𝜑 → (∀𝑦 ∈ 𝐴 ((𝑥 ∈ 𝐴 ↦ 𝐵)‘𝑦)𝑅((𝑥 ∈ 𝐴 ↦ 𝐶)‘𝑦) ↔ ∀𝑥 ∈ 𝐴 𝐵𝑅𝐶))
41	23, 40	bitrd 187	1 ⊢ (𝜑 → (𝐹 ∘𝑟 𝑅𝐺 ↔ ∀𝑥 ∈ 𝐴 𝐵𝑅𝐶))

Syntax hints:   → wi 4   ∧ wa 103   ↔ wb 104   = wceq 1331   ∈ wcel 1480  ∀wral 2416   class class class wbr 3929   ↦ cmpt 3989   Fn wfn 5118  ‘cfv 5123   ∘_𝑟 cofr 5981

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121  ax-coll 4043  ax-sep 4046  ax-pow 4098  ax-pr 4131

This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-eu 2002  df-mo 2003  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ral 2421  df-rex 2422  df-reu 2423  df-rab 2425  df-v 2688  df-sbc 2910  df-csb 3004  df-un 3075  df-in 3077  df-ss 3084  df-pw 3512  df-sn 3533  df-pr 3534  df-op 3536  df-uni 3737  df-iun 3815  df-br 3930  df-opab 3990  df-mpt 3991  df-id 4215  df-xp 4545  df-rel 4546  df-cnv 4547  df-co 4548  df-dm 4549  df-rn 4550  df-res 4551  df-ima 4552  df-iota 5088  df-fun 5125  df-fn 5126  df-f 5127  df-f1 5128  df-fo 5129  df-f1o 5130  df-fv 5131  df-ofr 5983

This theorem is referenced by: (None)