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Definition df-0r 9316
Description: Define signed real constant 0. This is a "temporary" set used in the construction of complex numbers df-c 9373, and is intended to be used only by the construction. From Proposition 9-4.2 of [Gleason] p. 126. (Contributed by NM, 9-Aug-1995.) (New usage is discouraged.)
Assertion
Ref Expression
df-0r

Detailed syntax breakdown of Definition df-0r
StepHypRef Expression
1 c0r 9120 . 2
2 c1p 9112 . . . 4
32, 2cop 3965 . . 3
4 cer 9118 . . 3
53, 4cec 7183 . 2
61, 5wceq 1370 1
Colors of variables: wff setvar class
This definition is referenced by:  gt0srpr  9330  0r  9332  m1p1sr  9344  0lt1sr  9347  0idsr  9349  00sr  9351  supsrlem  9363
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