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Mirrors > Home > ILE Home > Th. List > df-1r | Unicode version |
Description: Define signed real constant 1. 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.) |
Ref | Expression |
---|---|
df-1r |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c1r 7219 | . 2 | |
2 | c1p 7212 | . . . . 5 | |
3 | cpp 7213 | . . . . 5 | |
4 | 2, 2, 3 | co 5824 | . . . 4 |
5 | 4, 2 | cop 3563 | . . 3 |
6 | cer 7216 | . . 3 | |
7 | 5, 6 | cec 6478 | . 2 |
8 | 1, 7 | wceq 1335 | 1 |
Colors of variables: wff set class |
This definition is referenced by: 1sr 7671 m1p1sr 7680 m1m1sr 7681 0lt1sr 7685 1idsr 7688 recexgt0sr 7693 caucvgsrlembound 7714 caucvgsr 7722 pitonnlem1 7765 pitonnlem2 7767 recidpirq 7778 nntopi 7814 |
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