Theorem resseqnbas 16951

Description: The components of an extensible structure except the base set remain unchanged on a structure restriction. (Contributed by Mario Carneiro, 26-Nov-2014.) (Revised by Mario Carneiro, 2-Dec-2014.) (Revised by AV, 19-Oct-2024.)

Hypotheses

Ref	Expression
resseqnbas.r	⊢ 𝑅 = (𝑊 ↾s 𝐴)
resseqnbas.e	⊢ 𝐶 = (𝐸‘𝑊)
resseqnbas.f	⊢ 𝐸 = Slot (𝐸‘ndx)
resseqnbas.n	⊢ (𝐸‘ndx) ≠ (Base‘ndx)

Assertion

Ref	Expression
resseqnbas	⊢ (𝐴 ∈ 𝑉 → 𝐶 = (𝐸‘𝑅))

Proof of Theorem resseqnbas

Step	Hyp	Ref	Expression
1		resseqnbas.e	. 2 ⊢ 𝐶 = (𝐸‘𝑊)
2		resseqnbas.r	. . . . . . 7 ⊢ 𝑅 = (𝑊 ↾s 𝐴)
3		eqid 2738	. . . . . . 7 ⊢ (Base‘𝑊) = (Base‘𝑊)
4	2, 3	ressid2 16945	. . . . . 6 ⊢ (((Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = 𝑊)
5	4	fveq2d 6778	. . . . 5 ⊢ (((Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))
6	5	3expib 1121	. . . 4 ⊢ ((Base‘𝑊) ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)))
7	2, 3	ressval2 16946	. . . . . . 7 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → 𝑅 = (𝑊 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑊))⟩))
8	7	fveq2d 6778	. . . . . 6 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘(𝑊 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑊))⟩)))
9		resseqnbas.f	. . . . . . 7 ⊢ 𝐸 = Slot (𝐸‘ndx)
10		resseqnbas.n	. . . . . . 7 ⊢ (𝐸‘ndx) ≠ (Base‘ndx)
11	9, 10	setsnid 16910	. . . . . 6 ⊢ (𝐸‘𝑊) = (𝐸‘(𝑊 sSet ⟨(Base‘ndx), (𝐴 ∩ (Base‘𝑊))⟩))
12	8, 11	eqtr4di 2796	. . . . 5 ⊢ ((¬ (Base‘𝑊) ⊆ 𝐴 ∧ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))
13	12	3expib 1121	. . . 4 ⊢ (¬ (Base‘𝑊) ⊆ 𝐴 → ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊)))
14	6, 13	pm2.61i 182	. . 3 ⊢ ((𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))
15	9	str0 16890	. . . . . . 7 ⊢ ∅ = (𝐸‘∅)
16	15	eqcomi 2747	. . . . . 6 ⊢ (𝐸‘∅) = ∅
17		reldmress 16943	. . . . . 6 ⊢ Rel dom ↾s
18	16, 2, 17	oveqprc 16893	. . . . 5 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘𝑅))
19	18	eqcomd 2744	. . . 4 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑅) = (𝐸‘𝑊))
20	19	adantr 481	. . 3 ⊢ ((¬ 𝑊 ∈ V ∧ 𝐴 ∈ 𝑉) → (𝐸‘𝑅) = (𝐸‘𝑊))
21	14, 20	pm2.61ian 809	. 2 ⊢ (𝐴 ∈ 𝑉 → (𝐸‘𝑅) = (𝐸‘𝑊))
22	1, 21	eqtr4id 2797	1 ⊢ (𝐴 ∈ 𝑉 → 𝐶 = (𝐸‘𝑅))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 396   ∧ w3a 1086   = wceq 1539   ∈ wcel 2106   ≠ wne 2943  Vcvv 3432   ∩ cin 3886   ⊆ wss 3887  ∅c0 4256  ⟨cop 4567  ‘cfv 6433  (class class class)co 7275   sSet csts 16864  Slot cslot 16882  ndxcnx 16894  Basecbs 16912   ↾_s cress 16941

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pr 5352  ax-un 7588

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-sbc 3717  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-mpt 5158  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-res 5601  df-iota 6391  df-fun 6435  df-fv 6441  df-ov 7278  df-oprab 7279  df-mpo 7280  df-sets 16865  df-slot 16883  df-ress 16942

This theorem is referenced by:  ressplusg  17000  ressmulr  17017  ressstarv  17018  resssca  17053  ressvsca  17054  ressip  17055  resstset  17075  ressle  17090  ressunif  17112  ressds  17120  resshom  17129  ressco  17130