Metamath Proof Explorer < Previous   Next > Nearby theorems Mirrors  >  Home  >  MPE Home  >  Th. List  >  setsval Structured version   Visualization version   GIF version

Theorem setsval 15720
 Description: Value of the structure replacement function. (Contributed by Mario Carneiro, 1-Dec-2014.) (Revised by Mario Carneiro, 30-Apr-2015.)
Assertion
Ref Expression
setsval ((𝑆𝑉𝐵𝑊) → (𝑆 sSet ⟨𝐴, 𝐵⟩) = ((𝑆 ↾ (V ∖ {𝐴})) ∪ {⟨𝐴, 𝐵⟩}))

Proof of Theorem setsval
StepHypRef Expression
1 opex 4859 . . 3 𝐴, 𝐵⟩ ∈ V
2 setsvalg 15719 . . 3 ((𝑆𝑉 ∧ ⟨𝐴, 𝐵⟩ ∈ V) → (𝑆 sSet ⟨𝐴, 𝐵⟩) = ((𝑆 ↾ (V ∖ dom {⟨𝐴, 𝐵⟩})) ∪ {⟨𝐴, 𝐵⟩}))
31, 2mpan2 703 . 2 (𝑆𝑉 → (𝑆 sSet ⟨𝐴, 𝐵⟩) = ((𝑆 ↾ (V ∖ dom {⟨𝐴, 𝐵⟩})) ∪ {⟨𝐴, 𝐵⟩}))
4 dmsnopg 5524 . . . . 5 (𝐵𝑊 → dom {⟨𝐴, 𝐵⟩} = {𝐴})
54difeq2d 3690 . . . 4 (𝐵𝑊 → (V ∖ dom {⟨𝐴, 𝐵⟩}) = (V ∖ {𝐴}))
65reseq2d 5317 . . 3 (𝐵𝑊 → (𝑆 ↾ (V ∖ dom {⟨𝐴, 𝐵⟩})) = (𝑆 ↾ (V ∖ {𝐴})))
76uneq1d 3728 . 2 (𝐵𝑊 → ((𝑆 ↾ (V ∖ dom {⟨𝐴, 𝐵⟩})) ∪ {⟨𝐴, 𝐵⟩}) = ((𝑆 ↾ (V ∖ {𝐴})) ∪ {⟨𝐴, 𝐵⟩}))
83, 7sylan9eq 2664 1 ((𝑆𝑉𝐵𝑊) → (𝑆 sSet ⟨𝐴, 𝐵⟩) = ((𝑆 ↾ (V ∖ {𝐴})) ∪ {⟨𝐴, 𝐵⟩}))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ∧ wa 383   = wceq 1475   ∈ wcel 1977  Vcvv 3173   ∖ cdif 3537   ∪ cun 3538  {csn 4125  ⟨cop 4131  dom cdm 5038   ↾ cres 5040  (class class class)co 6549   sSet csts 15693 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pr 4833  ax-un 6847 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-res 5050  df-iota 5768  df-fun 5806  df-fv 5812  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-sets 15701 This theorem is referenced by:  setsidvald  15721  fvsetsid  15722  fsets  15723  setsabs  15730  setscom  15731  setsid  15742  estrres  16602
 Copyright terms: Public domain W3C validator