Theorem bdcsn 15362

Description: The singleton of a setvar is bounded. (Contributed by BJ, 16-Oct-2019.)

Assertion

Ref	Expression
bdcsn	|- BOUNDED { x }

Proof of Theorem bdcsn

Dummy variable y is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ax-bdeq 15312	. . 3 |- BOUNDED y = x
2	1	bdcab 15341	. 2 |- BOUNDED { y | y = x }
3		df-sn 3624	. 2 |- { x } = { y | y = x }
4	2, 3	bdceqir 15336	1 |- BOUNDED { x }

Syntax hints:   {cab 2179   {csn 3618  BOUNDED wbdc 15332

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 1458  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-4 1521  ax-17 1537  ax-ial 1545  ax-ext 2175  ax-bd0 15305  ax-bdeq 15312  ax-bdsb 15314

This theorem depends on definitions:  df-bi 117  df-clab 2180  df-cleq 2186  df-clel 2189  df-sn 3624  df-bdc 15333

This theorem is referenced by:  bdcpr  15363  bdctp  15364  bdvsn  15366  bdcsuc  15372