Theorem intv 4213

Description: The intersection of the universal class is empty. (Contributed by NM, 11-Sep-2008.)

Assertion

Ref	Expression
intv	|- |^| _V = (/)

Proof of Theorem intv

Step	Hyp	Ref	Expression
1		0ex 4170	. 2 |- (/) e. _V
2		int0el 3914	. 2 |- ( (/) e. _V -> |^| _V = (/) )
3	1, 2	ax-mp 5	1 |- |^| _V = (/)

Syntax hints:   = wceq 1372   e. wcel 2175   _Vcvv 2771   (/)c0 3459   |^|cint 3884

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 710  ax-5 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-ext 2186  ax-nul 4169

This theorem depends on definitions:  df-bi 117  df-tru 1375  df-nf 1483  df-sb 1785  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-v 2773  df-dif 3167  df-in 3171  df-ss 3178  df-nul 3460  df-int 3885

This theorem is referenced by: (None)