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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | c1r 6628 |
. 2
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2 | c1p 6621 |
. . . . 5
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3 | cpp 6622 |
. . . . 5
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4 | 2, 2, 3 | co 5565 |
. . . 4
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5 | 4, 2 | cop 3420 |
. . 3
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6 | cer 6625 |
. . 3
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7 | 5, 6 | cec 6193 |
. 2
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8 | 1, 7 | wceq 1285 |
1
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Colors of variables: wff set class |
This definition is referenced by: 1sr 7067 m1p1sr 7076 m1m1sr 7077 0lt1sr 7081 1idsr 7084 recexgt0sr 7089 caucvgsrlembound 7109 caucvgsr 7117 pitonnlem1 7152 pitonnlem2 7154 recidpirq 7165 nntopi 7199 |
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