Theorem bdctp 13754

Description: The unordered triple of three setvars is bounded. (Contributed by BJ, 16-Oct-2019.)

Assertion

Ref	Expression
bdctp	|- BOUNDED { x , y , z }

Proof of Theorem bdctp

Step	Hyp	Ref	Expression
1		bdcpr 13753	. . 3 |- BOUNDED { x , y }
2		bdcsn 13752	. . 3 |- BOUNDED { z }
3	1, 2	bdcun 13744	. 2 |- BOUNDED ( { x , y } u. { z } )
4		df-tp 3584	. 2 |- { x , y , z } = ( { x , y } u. { z } )
5	3, 4	bdceqir 13726	1 |- BOUNDED { x , y , z }

Syntax hints:   u. cun 3114   {csn 3576   {cpr 3577   {ctp 3578  BOUNDED wbdc 13722

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1435  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-4 1498  ax-17 1514  ax-ial 1522  ax-ext 2147  ax-bd0 13695  ax-bdor 13698  ax-bdeq 13702  ax-bdsb 13704

This theorem depends on definitions:  df-bi 116  df-clab 2152  df-cleq 2158  df-clel 2161  df-un 3120  df-sn 3582  df-pr 3583  df-tp 3584  df-bdc 13723

This theorem is referenced by: (None)