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Theorem sprsymrelfolem1 42266
 Description: Lemma 1 for sprsymrelfo 42271. (Contributed by AV, 22-Nov-2021.)
Hypothesis
Ref Expression
sprsymrelfo.q 𝑄 = {𝑞 ∈ (Pairs‘𝑉) ∣ ∀𝑎𝑉𝑏𝑉 (𝑞 = {𝑎, 𝑏} → 𝑎𝑅𝑏)}
Assertion
Ref Expression
sprsymrelfolem1 𝑄 ∈ 𝒫 (Pairs‘𝑉)
Distinct variable group:   𝑉,𝑞
Allowed substitution hints:   𝑄(𝑞,𝑎,𝑏)   𝑅(𝑞,𝑎,𝑏)   𝑉(𝑎,𝑏)

Proof of Theorem sprsymrelfolem1
StepHypRef Expression
1 sprsymrelfo.q . 2 𝑄 = {𝑞 ∈ (Pairs‘𝑉) ∣ ∀𝑎𝑉𝑏𝑉 (𝑞 = {𝑎, 𝑏} → 𝑎𝑅𝑏)}
2 fvex 6342 . . 3 (Pairs‘𝑉) ∈ V
3 ssrab2 3836 . . 3 {𝑞 ∈ (Pairs‘𝑉) ∣ ∀𝑎𝑉𝑏𝑉 (𝑞 = {𝑎, 𝑏} → 𝑎𝑅𝑏)} ⊆ (Pairs‘𝑉)
42, 3elpwi2 4960 . 2 {𝑞 ∈ (Pairs‘𝑉) ∣ ∀𝑎𝑉𝑏𝑉 (𝑞 = {𝑎, 𝑏} → 𝑎𝑅𝑏)} ∈ 𝒫 (Pairs‘𝑉)
51, 4eqeltri 2846 1 𝑄 ∈ 𝒫 (Pairs‘𝑉)
 Colors of variables: wff setvar class Syntax hints:   → wi 4   = wceq 1631   ∈ wcel 2145  ∀wral 3061  {crab 3065  Vcvv 3351  𝒫 cpw 4297  {cpr 4318   class class class wbr 4786  ‘cfv 6031  Pairscspr 42251 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1870  ax-4 1885  ax-5 1991  ax-6 2057  ax-7 2093  ax-9 2154  ax-10 2174  ax-11 2190  ax-12 2203  ax-13 2408  ax-ext 2751  ax-sep 4915  ax-nul 4923 This theorem depends on definitions:  df-bi 197  df-an 383  df-or 827  df-tru 1634  df-ex 1853  df-nf 1858  df-sb 2050  df-eu 2622  df-clab 2758  df-cleq 2764  df-clel 2767  df-nfc 2902  df-ral 3066  df-rex 3067  df-rab 3070  df-v 3353  df-sbc 3588  df-dif 3726  df-un 3728  df-in 3730  df-ss 3737  df-nul 4064  df-pw 4299  df-sn 4317  df-pr 4319  df-uni 4575  df-iota 5994  df-fv 6039 This theorem is referenced by:  sprsymrelfo  42271
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