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Theorem strss 17265
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 17264 . 2 (⊤ → (𝐸𝑇) = (𝐸𝑆))
1110mptru 1574 1 (𝐸𝑇) = (𝐸𝑆)
Colors of variables: wff setvar class
Syntax hints:   = wceq 1567  wtru 1568  wcel 2149  Vcvv 3463  wss 3913  cop 4600  Fun wfun 6531  cfv 6537  Slot cslot 17240  ndxcnx 17252
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-sep 5261  ax-nul 5271  ax-pr 5405
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4877  df-br 5114  df-opab 5178  df-mpt 5197  df-id 5557  df-xp 5668  df-rel 5669  df-cnv 5670  df-co 5671  df-dm 5672  df-iota 6493  df-fun 6539  df-fv 6545  df-slot 17241
This theorem is referenced by:  grpss  19020
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