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Definition df-r 6956
Description: Define the set of real numbers. (Contributed by NM, 22-Feb-1996.)
Assertion
Ref Expression
df-r  |-  RR  =  ( R.  X.  { 0R } )

Detailed syntax breakdown of Definition df-r
StepHypRef Expression
1 cr 6945 . 2  class  RR
2 cnr 6452 . . 3  class  R.
3 c0r 6453 . . . 4  class  0R
43csn 3402 . . 3  class  { 0R }
52, 4cxp 4370 . 2  class  ( R. 
X.  { 0R }
)
61, 5wceq 1259 1  wff  RR  =  ( R.  X.  { 0R } )
Colors of variables: wff set class
This definition is referenced by:  opelreal  6961  elreal  6962  elreal2  6964  axresscn  6993  ax1rid  7008
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