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Definition df-r 6721
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 6710 . 2  RR
2 cnr 6281 . . 3  R.
3 c0r 6282 . . . 4  0R
43csn 3367 . . 3  { 0R }
52, 4cxp 4286 . 2  R. 
X.  { 0R }
61, 5wceq 1242 1  RR  R.  X.  { 0R }
Colors of variables: wff set class
This definition is referenced by:  opelreal  6726  elreal  6727  elreal2  6728  axresscn  6746  ax1rid  6761
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