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Theorem bj-bdind 16004
Description: Boundedness of the formula "the setvar  x is an inductive class". (Contributed by BJ, 30-Nov-2019.)
Assertion
Ref Expression
bj-bdind  |- BOUNDED Ind  x

Proof of Theorem bj-bdind
Dummy variable  y is distinct from all other variables.
StepHypRef Expression
1 bj-bd0el 15942 . . 3  |- BOUNDED  (/)  e.  x
2 bj-bdsucel 15956 . . . 4  |- BOUNDED  suc  y  e.  x
32ax-bdal 15892 . . 3  |- BOUNDED  A. y  e.  x  suc  y  e.  x
41, 3ax-bdan 15889 . 2  |- BOUNDED  ( (/)  e.  x  /\  A. y  e.  x  suc  y  e.  x
)
5 df-bj-ind 16001 . 2  |-  (Ind  x  <->  (
(/)  e.  x  /\  A. y  e.  x  suc  y  e.  x )
)
64, 5bd0r 15899 1  |- BOUNDED Ind  x
Colors of variables: wff set class
Syntax hints:    /\ wa 104    e. wcel 2177   A.wral 2485   (/)c0 3464   suc csuc 4420  BOUNDED wbd 15886  Ind wind 16000
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 615  ax-in2 616  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-ext 2188  ax-bd0 15887  ax-bdim 15888  ax-bdan 15889  ax-bdor 15890  ax-bdn 15891  ax-bdal 15892  ax-bdex 15893  ax-bdeq 15894  ax-bdel 15895  ax-bdsb 15896
This theorem depends on definitions:  df-bi 117  df-tru 1376  df-fal 1379  df-nf 1485  df-sb 1787  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ral 2490  df-rex 2491  df-v 2775  df-dif 3172  df-un 3174  df-in 3176  df-ss 3183  df-nul 3465  df-sn 3644  df-suc 4426  df-bdc 15915  df-bj-ind 16001
This theorem is referenced by: (None)
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