Definition df-0r 5171

Description: Define signed real constant 0. This is a "temporary" set used in the construction of complex numbers df-c 5240, and is intended to be used only by the construction. From Proposition 9-4.2 of [Gleason] p. 126.

Assertion

Ref	Expression
df-0r	|- 0R = [<.1P, 1P>.] ~R

Detailed syntax breakdown of Definition df-0r

Step	Hyp	Ref	Expression
1		c0r 4994	. 2 class 0R
2		c1p 4986	. . . 4 class 1P
3	2, 2	cop 2411	. . 3 class <.1P, 1P>.
4		cer 4992	. . 3 class ~R
5	3, 4	cec 4259	. 2 class [<.1P, 1P>.] ~R
6	1, 5	wceq 956	1 wff 0R = [<.1P, 1P>.] ~R

This definition is referenced by:  gt0srpr 5187  0r 5189  m1p1sr 5201  0lt1sr 5204  0idsr 5206  00sr 5208  mappsrpr 5218  map2psrpr 5220

Copyright terms: Public domain