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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 6283 |
. 2
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2 | c1p 6276 |
. . . . 5
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3 | cpp 6277 |
. . . . 5
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4 | 2, 2, 3 | co 5455 |
. . . 4
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5 | 4, 2 | cop 3370 |
. . 3
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6 | cer 6280 |
. . 3
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7 | 5, 6 | cec 6040 |
. 2
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8 | 1, 7 | wceq 1242 |
1
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Colors of variables: wff set class |
This definition is referenced by: 1sr 6679 m1p1sr 6688 m1m1sr 6689 0lt1sr 6693 1idsr 6696 recexgt0sr 6701 pitonnlem1 6741 pitonnlem2 6743 |
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