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Theorem strss 16537
Description: Propagate component extraction to a structure 𝑇 from a subset structure 𝑆. (Contributed by Mario Carneiro, 11-Oct-2013.) (Revised by Mario Carneiro, 15-Jan-2014.)
Hypotheses
Ref Expression
strss.t 𝑇 ∈ V
strss.f Fun 𝑇
strss.s 𝑆𝑇
strss.e 𝐸 = Slot (𝐸‘ndx)
strss.n ⟨(𝐸‘ndx), 𝐶⟩ ∈ 𝑆
Assertion
Ref Expression
strss (𝐸𝑇) = (𝐸𝑆)

Proof of Theorem strss
StepHypRef Expression
1 strss.e . . 3 𝐸 = Slot (𝐸‘ndx)
2 strss.t . . . 4 𝑇 ∈ V
32a1i 11 . . 3 (⊤ → 𝑇 ∈ V)
4 strss.f . . . 4 Fun 𝑇
54a1i 11 . . 3 (⊤ → Fun 𝑇)
6 strss.s . . . 4 𝑆𝑇
76a1i 11 . . 3 (⊤ → 𝑆𝑇)
8 strss.n . . . 4 ⟨(𝐸‘ndx), 𝐶⟩ ∈ 𝑆
98a1i 11 . . 3 (⊤ → ⟨(𝐸‘ndx), 𝐶⟩ ∈ 𝑆)
101, 3, 5, 7, 9strssd 16536 . 2 (⊤ → (𝐸𝑇) = (𝐸𝑆))
1110mptru 1543 1 (𝐸𝑇) = (𝐸𝑆)
Colors of variables: wff setvar class
Syntax hints:   = wceq 1536  wtru 1537  wcel 2113  Vcvv 3497  wss 3939  cop 4576  Fun wfun 6352  cfv 6358  ndxcnx 16483  Slot cslot 16485
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1969  ax-7 2014  ax-8 2115  ax-9 2123  ax-10 2144  ax-11 2160  ax-12 2176  ax-ext 2796  ax-sep 5206  ax-nul 5213  ax-pr 5333
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1539  df-ex 1780  df-nf 1784  df-sb 2069  df-mo 2621  df-eu 2653  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2966  df-ral 3146  df-rex 3147  df-rab 3150  df-v 3499  df-sbc 3776  df-dif 3942  df-un 3944  df-in 3946  df-ss 3955  df-nul 4295  df-if 4471  df-sn 4571  df-pr 4573  df-op 4577  df-uni 4842  df-br 5070  df-opab 5132  df-mpt 5150  df-id 5463  df-xp 5564  df-rel 5565  df-cnv 5566  df-co 5567  df-dm 5568  df-iota 6317  df-fun 6360  df-fv 6366  df-slot 16490
This theorem is referenced by:  grpss  18124
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