Definition df-r 5224

Description: Define the set of real numbers.

Assertion

Ref	Expression
df-r	|- RR = (R. X. {0R})

Detailed syntax breakdown of Definition df-r

Step	Hyp	Ref	Expression
1		cr 5213	. 2 class RR
2		cnr 4973	. . 3 class R.
3		c0r 4974	. . . 4 class 0R
4	3	csn 2405	. . 3 class {0R}
5	2, 4	cxp 3163	. 2 class (R. X. {0R})
6	1, 5	wceq 954	1 wff RR = (R. X. {0R})

This definition is referenced by:  opelreal 5229  elreal 5230  axresscn 5248  avril1 8723

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