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Theorem strfvn 13491
 Description: Value of a structure component extractor . Normally, is a defined constant symbol such as (df-base 13479) and is a fixed integer such as . is a structure, i.e. a specific member of a class of structures such as (df-poset 14408) where . Note: Normally, this theorem shouldn't be used outside of this section, because it requires hard-coded index values. Instead, use strfv 13506. (Contributed by NM, 9-Sep-2011.) (Revised by Mario Carneiro, 6-Oct-2013.) (New usage is discouraged.)
Hypotheses
Ref Expression
strfvn.f
strfvn.c Slot
Assertion
Ref Expression
strfvn

Proof of Theorem strfvn
StepHypRef Expression
1 strfvn.c . . 3 Slot
2 strfvn.f . . . 4
32a1i 11 . . 3
41, 3strfvnd 13489 . 2
54trud 1333 1
 Colors of variables: wff set class Syntax hints:   wtru 1326   wceq 1653   wcel 1726  cvv 2958  cfv 5457  Slot cslot 13473 This theorem is referenced by:  ndxarg  13494  str0  13510  setsnid  13514  baseval  13515  ressbas  13524 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1556  ax-5 1567  ax-17 1627  ax-9 1667  ax-8 1688  ax-14 1730  ax-6 1745  ax-7 1750  ax-11 1762  ax-12 1951  ax-ext 2419  ax-sep 4333  ax-nul 4341  ax-pr 4406 This theorem depends on definitions:  df-bi 179  df-or 361  df-an 362  df-3an 939  df-tru 1329  df-ex 1552  df-nf 1555  df-sb 1660  df-eu 2287  df-mo 2288  df-clab 2425  df-cleq 2431  df-clel 2434  df-nfc 2563  df-ne 2603  df-ral 2712  df-rex 2713  df-rab 2716  df-v 2960  df-sbc 3164  df-dif 3325  df-un 3327  df-in 3329  df-ss 3336  df-nul 3631  df-if 3742  df-sn 3822  df-pr 3823  df-op 3825  df-uni 4018  df-br 4216  df-opab 4270  df-mpt 4271  df-id 4501  df-xp 4887  df-rel 4888  df-cnv 4889  df-co 4890  df-dm 4891  df-iota 5421  df-fun 5459  df-fv 5465  df-slot 13478
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