Theorem eqimss2 3283

Description: Equality implies the subclass relation. (Contributed by NM, 23-Nov-2003.)

Assertion

Ref	Expression
eqimss2	|- ( B = A -> A C_ B )

Proof of Theorem eqimss2

Step	Hyp	Ref	Expression
1		eqimss 3282	. 2 |- ( A = B -> A C_ B )
2	1	eqcoms 2234	1 |- ( B = A -> A C_ B )

Syntax hints:   -> wi 4   = wceq 1398   C_ wss 3201

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 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-11 1555  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-in 3207  df-ss 3214

This theorem is referenced by:  ifpprsnssdc  3783  disjeq2  4073  disjeq1  4076  poeq2  4403  seeq1  4442  seeq2  4443  dmcoeq  5011  xp11m  5182  funeq  5353  fconst3m  5881  tposeq  6456  undifdcss  7158  nninfctlemfo  12691  ennnfonelemk  13101  ennnfonelemss  13111  qnnen  13132  imasaddfnlemg  13477  topgele  14840  topontopn  14848  txdis  15088  edgstruct  16005