Theorem bdctp 15518

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 15517	. . 3 |- BOUNDED { x , y }
2		bdcsn 15516	. . 3 |- BOUNDED { z }
3	1, 2	bdcun 15508	. 2 |- BOUNDED ( { x , y } u. { z } )
4		df-tp 3630	. 2 |- { x , y , z } = ( { x , y } u. { z } )
5	3, 4	bdceqir 15490	1 |- BOUNDED { x , y , z }

Syntax hints:   u. cun 3155   {csn 3622   {cpr 3623   {ctp 3624  BOUNDED wbdc 15486

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-5 1461  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-4 1524  ax-17 1540  ax-ial 1548  ax-ext 2178  ax-bd0 15459  ax-bdor 15462  ax-bdeq 15466  ax-bdsb 15468

This theorem depends on definitions:  df-bi 117  df-clab 2183  df-cleq 2189  df-clel 2192  df-un 3161  df-sn 3628  df-pr 3629  df-tp 3630  df-bdc 15487

This theorem is referenced by: (None)