Theorem cnvtrucl0 43045

Description: The converse of the trivial closure is equal to the closure of the converse. (Contributed by RP, 18-Oct-2020.)

Assertion

Ref	Expression
cnvtrucl0	⊢ (𝑋 ∈ 𝑉 → ◡∩ {𝑥 ∣ (𝑋 ⊆ 𝑥 ∧ ⊤)} = ∩ {𝑦 ∣ (◡𝑋 ⊆ 𝑦 ∧ ⊤)})

Distinct variable groups:   𝑥,𝑦,𝑉   𝑥,𝑋,𝑦

Proof of Theorem cnvtrucl0

Step	Hyp	Ref	Expression
1		idd 24	. 2 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑥 = (◡𝑦 ∪ (𝑋 ∖ ◡◡𝑋))) → (⊤ → ⊤))
2		idd 24	. 2 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑦 = ◡𝑥) → (⊤ → ⊤))
3		biidd 262	. 2 ⊢ (𝑥 = 𝑋 → (⊤ ↔ ⊤))
4		ssidd 4002	. 2 ⊢ (𝑋 ∈ 𝑉 → 𝑋 ⊆ 𝑋)
5		elex 3489	. 2 ⊢ (𝑋 ∈ 𝑉 → 𝑋 ∈ V)
6		trud 1544	. 2 ⊢ (𝑋 ∈ 𝑉 → ⊤)
7	1, 2, 3, 4, 5, 6	clcnvlem 43044	1 ⊢ (𝑋 ∈ 𝑉 → ◡∩ {𝑥 ∣ (𝑋 ⊆ 𝑥 ∧ ⊤)} = ∩ {𝑦 ∣ (◡𝑋 ⊆ 𝑦 ∧ ⊤)})

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1534  ⊤wtru 1535   ∈ wcel 2099  {cab 2705   ∖ cdif 3942   ∪ cun 3943   ⊆ wss 3945  ∩ cint 4945  ^◡ccnv 5672

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1906  ax-6 1964  ax-7 2004  ax-8 2101  ax-9 2109  ax-10 2130  ax-11 2147  ax-12 2167  ax-ext 2699  ax-sep 5294  ax-nul 5301  ax-pow 5360  ax-pr 5424  ax-un 7735

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 847  df-3an 1087  df-tru 1537  df-fal 1547  df-ex 1775  df-nf 1779  df-sb 2061  df-mo 2530  df-eu 2559  df-clab 2706  df-cleq 2720  df-clel 2806  df-nfc 2881  df-ne 2937  df-ral 3058  df-rex 3067  df-rab 3429  df-v 3472  df-dif 3948  df-un 3950  df-in 3952  df-ss 3962  df-nul 4320  df-if 4526  df-pw 4601  df-sn 4626  df-pr 4628  df-op 4632  df-uni 4905  df-int 4946  df-br 5144  df-opab 5206  df-mpt 5227  df-id 5571  df-xp 5679  df-rel 5680  df-cnv 5681  df-co 5682  df-dm 5683  df-rn 5684  df-iota 6495  df-fun 6545  df-fv 6551  df-1st 7988  df-2nd 7989

This theorem is referenced by: (None)