Theorem riotaclbBAD 39462

Description: Closure of restricted iota. (Contributed by NM, 15-Sep-2011.)

Hypothesis

Ref	Expression
riotaclb.1	⊢ 𝐴 ∈ V

Assertion

Ref	Expression
riotaclbBAD	⊢ (∃!𝑥 ∈ 𝐴 𝜑 ↔ (℩𝑥 ∈ 𝐴 𝜑) ∈ 𝐴)

Distinct variable group:   𝑥,𝐴

Allowed substitution hint:   𝜑(𝑥)

Proof of Theorem riotaclbBAD

Step	Hyp	Ref	Expression
1		riotaclb.1	. 2 ⊢ 𝐴 ∈ V
2		riotaclbgBAD 39461	. 2 ⊢ (𝐴 ∈ V → (∃!𝑥 ∈ 𝐴 𝜑 ↔ (℩𝑥 ∈ 𝐴 𝜑) ∈ 𝐴))
3	1, 2	ax-mp 5	1 ⊢ (∃!𝑥 ∈ 𝐴 𝜑 ↔ (℩𝑥 ∈ 𝐴 𝜑) ∈ 𝐴)

Syntax hints:   ↔ wb 208   ∈ wcel 2121  ∃!wreu 3344  Vcvv 3433  ℩crio 7316

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1975  ax-7 2016  ax-8 2123  ax-9 2131  ax-10 2154  ax-11 2170  ax-12 2191  ax-ext 2713  ax-sep 5221  ax-pow 5297  ax-pr 5365  ax-un 7682  ax-riotaBAD 39460

This theorem depends on definitions:  df-bi 209  df-an 398  df-or 855  df-3an 1095  df-tru 1551  df-fal 1561  df-ex 1788  df-nf 1792  df-sb 2075  df-mo 2545  df-eu 2575  df-clab 2720  df-cleq 2733  df-clel 2816  df-nfc 2890  df-ral 3056  df-rex 3066  df-reu 3347  df-rab 3394  df-v 3435  df-sbc 3726  df-dif 3888  df-un 3890  df-in 3892  df-ss 3902  df-nul 4265  df-if 4458  df-pw 4534  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4842  df-br 5076  df-opab 5138  df-mpt 5157  df-id 5516  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-iota 6445  df-fun 6491  df-fv 6497  df-riota 7317  df-undef 8217

This theorem is referenced by:  cdlemk36  41420