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Definition df-0r 6659
Description: Define signed real constant 0. This is a "temporary" set used in the construction of complex numbers, 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.)
Assertion
Ref Expression
df-0r  0R  <. 1P ,  1P >.  ~R

Detailed syntax breakdown of Definition df-0r
StepHypRef Expression
1 c0r 6282 . 2  0R
2 c1p 6276 . . . 4  1P
32, 2cop 3370 . . 3  <. 1P ,  1P >.
4 cer 6280 . . 3  ~R
53, 4cec 6040 . 2  <. 1P ,  1P >.  ~R
61, 5wceq 1242 1  0R  <. 1P ,  1P >.  ~R
Colors of variables: wff set class
This definition is referenced by:  gt0srpr  6676  0r  6678  m1p1sr  6688  0lt1sr  6693  0idsr  6695  00sr  6697
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