Definition df-m1r 9487

Description: Define signed real constant -1. This is a "temporary" set used in the construction of complex numbers df-c 9545, and is intended to be used only by the construction. (Contributed by NM, 9-Aug-1995.) (New usage is discouraged.)

Assertion

Ref	Expression
df-m1r	|- -1R = [ <. 1P , ( 1P +P. 1P ) >. ] ~R

Detailed syntax breakdown of Definition df-m1r

Step	Hyp	Ref	Expression
1		cm1r 9293	. 2 class -1R
2		c1p 9285	. . . 4 class 1P
3		cpp 9286	. . . . 5 class +P.
4	2, 2, 3	co 6290	. . . 4 class ( 1P +P. 1P )
5	2, 4	cop 3974	. . 3 class <. 1P , ( 1P +P. 1P ) >.
6		cer 9289	. . 3 class ~R
7	5, 6	cec 7361	. 2 class [ <. 1P , ( 1P +P. 1P ) >. ] ~R
8	1, 7	wceq 1444	1 wff -1R = [ <. 1P , ( 1P +P. 1P ) >. ] ~R

This definition is referenced by:  m1r  9506  m1p1sr  9516  m1m1sr  9517  mappsrpr  9532  map2psrpr  9534