Theorem imasubclem1 50423

Description: Lemma for imasubc 50470. (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 7957	. . . . 5 ⊢ (𝐹 ∈ 𝑉 → ◡𝐹 ∈ V)
3	1, 2	syl 18	. . . 4 ⊢ (𝜑 → ◡𝐹 ∈ V)
4	3	imaexd 7949	. . 3 ⊢ (𝜑 → (◡𝐹 “ 𝐴) ∈ V)
5		imasubclem1.g	. . . . 5 ⊢ (𝜑 → 𝐺 ∈ 𝑊)
6		cnvexg 7957	. . . . 5 ⊢ (𝐺 ∈ 𝑊 → ◡𝐺 ∈ V)
7	5, 6	syl 18	. . . 4 ⊢ (𝜑 → ◡𝐺 ∈ V)
8	7	imaexd 7949	. . 3 ⊢ (𝜑 → (◡𝐺 “ 𝐵) ∈ V)
9	4, 8	xpexd 7786	. 2 ⊢ (𝜑 → ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵)) ∈ V)
10		fvex 6918	. . . 4 ⊢ (𝐻‘𝐶) ∈ V
11	10	imaex 7947	. . 3 ⊢ ((𝐻‘𝐶) “ 𝐷) ∈ V
12	11	rgenw 3084	. 2 ⊢ ∀𝑥 ∈ ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵))((𝐻‘𝐶) “ 𝐷) ∈ V
13		iunexg 7996	. 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 598	1 ⊢ (𝜑 → ∪ 𝑥 ∈ ((◡𝐹 “ 𝐴) × (◡𝐺 “ 𝐵))((𝐻‘𝐶) “ 𝐷) ∈ V)

This proof depends on syntax axioms:   → wi 4   ∈ wcel 2147  ∀wral 3080  Vcvv 3454  ∪ ciun 4954   × cxp 5653  ^◡ccnv 5654   “ cima 5658  ‘cfv 6555

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-11 2197  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7772

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-mo 2567  df-clab 2742  df-cleq 2755  df-clel 2839  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5171  df-xp 5661  df-rel 5662  df-cnv 5663  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-iota 6509  df-fv 6563

This theorem is used by:  imasubclem2  50424  imasubclem3  50425