Theorem imasubclem1 49086

Description: Lemma for imasubc 49133. (Contributed by Zhi Wang, 6-Nov-2025.)

Hypotheses

Ref	Expression
imasubclem1.f	⊢ (𝜑 → 𝐹 ∈ 𝑉)
imasubclem1.g	⊢ (𝜑 → 𝐺 ∈ 𝑊)

Assertion

Ref	Expression
imasubclem1	⊢ (𝜑 → ∪ 𝑥 ∈ ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵))((𝐻‘𝐶) “ 𝐷) ∈ V)

Distinct variable groups:   𝑥,𝐴   𝑥,𝐵   𝑥,𝐹   𝑥,𝐺

Allowed substitution hints:   𝜑(𝑥)   𝐶(𝑥)   𝐷(𝑥)   𝐻(𝑥)   𝑉(𝑥)   𝑊(𝑥)

Proof of Theorem imasubclem1

Step	Hyp	Ref	Expression
1		imasubclem1.f	. . . . 5 ⊢ (𝜑 → 𝐹 ∈ 𝑉)
2		cnvexg 7880	. . . . 5 ⊢ (𝐹 ∈ 𝑉 → ◡𝐹 ∈ V)
3	1, 2	syl 17	. . . 4 ⊢ (𝜑 → ◡𝐹 ∈ V)
4	3	imaexd 7872	. . 3 ⊢ (𝜑 → (◡𝐹 “ 𝐴) ∈ V)
5		imasubclem1.g	. . . . 5 ⊢ (𝜑 → 𝐺 ∈ 𝑊)
6		cnvexg 7880	. . . . 5 ⊢ (𝐺 ∈ 𝑊 → ◡𝐺 ∈ V)
7	5, 6	syl 17	. . . 4 ⊢ (𝜑 → ◡𝐺 ∈ V)
8	7	imaexd 7872	. . 3 ⊢ (𝜑 → (◡𝐺 “ 𝐵) ∈ V)
9	4, 8	xpexd 7707	. 2 ⊢ (𝜑 → ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵)) ∈ V)
10		fvex 6853	. . . 4 ⊢ (𝐻‘𝐶) ∈ V
11	10	imaex 7870	. . 3 ⊢ ((𝐻‘𝐶) “ 𝐷) ∈ V
12	11	rgenw 3048	. 2 ⊢ ∀𝑥 ∈ ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵))((𝐻‘𝐶) “ 𝐷) ∈ V
13		iunexg 7921	. 2 ⊢ ((((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵)) ∈ V ∧ ∀𝑥 ∈ ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵))((𝐻‘𝐶) “ 𝐷) ∈ V) → ∪ 𝑥 ∈ ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵))((𝐻‘𝐶) “ 𝐷) ∈ V)
14	9, 12, 13	sylancl 586	1 ⊢ (𝜑 → ∪ 𝑥 ∈ ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵))((𝐻‘𝐶) “ 𝐷) ∈ V)

Syntax hints:   → wi 4   ∈ wcel 2109  ∀wral 3044  Vcvv 3444  ∪ ciun 4951   × cxp 5629  ^◡ccnv 5630   “ cima 5634  ‘cfv 6499

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-11 2158  ax-ext 2701  ax-rep 5229  ax-sep 5246  ax-nul 5256  ax-pow 5315  ax-pr 5382  ax-un 7691

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-sb 2066  df-mo 2533  df-clab 2708  df-cleq 2721  df-clel 2803  df-ne 2926  df-ral 3045  df-rex 3054  df-rab 3403  df-v 3446  df-dif 3914  df-un 3916  df-in 3918  df-ss 3928  df-nul 4293  df-if 4485  df-pw 4561  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4868  df-iun 4953  df-br 5103  df-opab 5165  df-xp 5637  df-rel 5638  df-cnv 5639  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6452  df-fv 6507

This theorem is referenced by:  imasubclem2  49087  imasubclem3  49088