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Definition df-r 8747
Description: Define the set of real numbers. (Contributed by NM, 22-Feb-1996.) (New usage is discouraged.)
Assertion
Ref Expression
df-r  |-  RR  =  ( R.  X.  { 0R } )

Detailed syntax breakdown of Definition df-r
StepHypRef Expression
1 cr 8736 . 2  class  RR
2 cnr 8489 . . 3  class  R.
3 c0r 8490 . . . 4  class  0R
43csn 3640 . . 3  class  { 0R }
52, 4cxp 4687 . 2  class  ( R. 
X.  { 0R }
)
61, 5wceq 1623 1  wff  RR  =  ( R.  X.  { 0R } )
Colors of variables: wff set class
This definition is referenced by:  opelreal  8752  elreal  8753  elreal2  8754  axresscn  8770  ax1rid  8783  avril1  20836
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