Theorem elmptrab2OLD 21631

Description: Obsolete version of elmptrab2 21632 as of 26-Mar-2021. (Contributed by Stefan O'Rear, 28-Jul-2015.) (Proof modification is discouraged.) (New usage is discouraged.)

Hypotheses

Ref	Expression
elmptrab2.f	⊢ 𝐹 = (𝑥 ∈ V ↦ {𝑦 ∈ 𝐵 ∣ 𝜑})
elmptrab2.s1	⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → (𝜑 ↔ 𝜓))
elmptrab2.s2	⊢ (𝑥 = 𝑋 → 𝐵 = 𝐶)
elmptrab2OLD.ex	⊢ 𝐵 ∈ 𝑉
elmptrab2OLD.rc	⊢ (𝑌 ∈ 𝐶 → 𝑋 ∈ 𝑊)

Assertion

Ref	Expression
elmptrab2OLD	⊢ (𝑌 ∈ (𝐹‘𝑋) ↔ (𝑌 ∈ 𝐶 ∧ 𝜓))

Distinct variable groups:   𝑥,𝑦,𝜓   𝑥,𝑋,𝑦   𝑥,𝑌,𝑦   𝑥,𝐶,𝑦   𝑥,𝑉,𝑦   𝑥,𝑊,𝑦   𝑦,𝐵

Allowed substitution hints:   𝜑(𝑥,𝑦)   𝐵(𝑥)   𝐹(𝑥,𝑦)

Proof of Theorem elmptrab2OLD

Step	Hyp	Ref	Expression
1		elmptrab2.f	. . 3 ⊢ 𝐹 = (𝑥 ∈ V ↦ {𝑦 ∈ 𝐵 ∣ 𝜑})
2		elmptrab2.s1	. . 3 ⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → (𝜑 ↔ 𝜓))
3		elmptrab2.s2	. . 3 ⊢ (𝑥 = 𝑋 → 𝐵 = 𝐶)
4		elmptrab2OLD.ex	. . . 4 ⊢ 𝐵 ∈ 𝑉
5	4	a1i 11	. . 3 ⊢ (𝑥 ∈ V → 𝐵 ∈ 𝑉)
6	1, 2, 3, 5	elmptrab 21630	. 2 ⊢ (𝑌 ∈ (𝐹‘𝑋) ↔ (𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓))
7		3simpc 1060	. . 3 ⊢ ((𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓) → (𝑌 ∈ 𝐶 ∧ 𝜓))
8		elmptrab2OLD.rc	. . . . . 6 ⊢ (𝑌 ∈ 𝐶 → 𝑋 ∈ 𝑊)
9		elex 3212	. . . . . 6 ⊢ (𝑋 ∈ 𝑊 → 𝑋 ∈ V)
10	8, 9	syl 17	. . . . 5 ⊢ (𝑌 ∈ 𝐶 → 𝑋 ∈ V)
11	10	adantr 481	. . . 4 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → 𝑋 ∈ V)
12		simpl 473	. . . 4 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → 𝑌 ∈ 𝐶)
13		simpr 477	. . . 4 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → 𝜓)
14	11, 12, 13	3jca 1242	. . 3 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → (𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓))
15	7, 14	impbii 199	. 2 ⊢ ((𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓) ↔ (𝑌 ∈ 𝐶 ∧ 𝜓))
16	6, 15	bitri 264	1 ⊢ (𝑌 ∈ (𝐹‘𝑋) ↔ (𝑌 ∈ 𝐶 ∧ 𝜓))

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990  {crab 2916  Vcvv 3200   ↦ cmpt 4729  ‘cfv 5888

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fv 5896

This theorem is referenced by: (None)